CVE-2021-47347

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47347", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:28:16.981Z", "datePublished": "2024-05-21T14:35:52.947Z", "dateUpdated": "2026-08-05T08:47:22.692Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:47:22.692Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwl1251: Fix possible buffer overflow in wl1251_cmd_scan\n\nFunction wl1251_cmd_scan calls memcpy without checking the length.\nHarden by checking the length is within the maximum allowed size."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The overflow is reached only when a local process supplies an SSID via nl80211 NL80211_CMD_TRIGGER_SCAN or WEXT SIOCSIWSCAN into wl1251_op_hw_scan\u2192wl1251_cmd_scan; the copied bytes are not taken from over-the-air frames, so this is Local rather than Adjacent.\nAC:L - Once an oversized ssid_len reaches wl1251_cmd_scan, the unbounded memcpy into ssid[32] is fully deterministic with no race or layout dependency; the driver performs no length check of its own, so attack complexity is Low.\nPR:L - NL80211_CMD_TRIGGER_SCAN uses GENL_UNS_ADMIN_PERM (CAP_NET_ADMIN in the wiphy netns), which per kernel CNA guidance is Low rather than High, and on typical wl1251 embedded/desktop deployments that capability is delegated to ordinary sessions via wpa_supplicant/NetworkManager.\nUI:N - The attacker issues the scan or connect-driven scan request themselves; no separate victim action such as opening a crafted file is required.\nS:U - Corruption is confined to the host kernel wl1251 command buffer and the same OS security authority; it is not a VM escape, IOMMU bypass, or other cross-boundary impact.\nC:H - An oversized ssid_len causes both an out-of-bounds write past ssid[32] and an out-of-bounds read from the source SSID buffer into adjacent kernel memory in the scan request, which per OOB/memory-corruption guidance is High confidentiality impact.\nI:H - The unchecked memcpy is an attacker-controlled out-of-bounds write past the 32-byte ssid field into adjacent cmd->channels[] (then submitted to firmware), and out-of-bounds writes are scored High integrity.\nA:H - Kernel memory corruption from the unbounded copy can oops/panic under hardened kernels, and corrupting the firmware scan command can wedge or crash the wl1251 path, so availability impact is High."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ti/wl1251/cmd.c"], "versions": [{"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "57ad99ae3c6738ba87bad259bb57c641ca68ebf6", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "d3d8b9c9c7843dce31e284927d4c9904fd5a510a", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "0f6c0488368c9ac1aa685821916fadba32f5d1ef", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "115103f6e3f1c26c473766c16439c7c8b235529a", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "d71dddeb5380613f9ef199f3e7368fd78fb1a46e", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea", "status": "affected", "versionType": "git"}, {"version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "d10a87a3535cce2b890897914f5d0d83df669c63", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ti/wl1251/cmd.c"], "versions": [{"version": "2.6.31", "status": "affected"}, {"version": "0", "lessThan": "2.6.31", "status": "unaffected", "versionType": "semver"}, {"version": "4.4.276", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.276", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.240", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.198", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.133", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.51", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.18", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13.3", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.4.276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.9.276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.14.240"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "4.19.198"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.4.133"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.10.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.12.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.13.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "5.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/57ad99ae3c6738ba87bad259bb57c641ca68ebf6"}, {"url": "https://git.kernel.org/stable/c/d3d8b9c9c7843dce31e284927d4c9904fd5a510a"}, {"url": "https://git.kernel.org/stable/c/0f6c0488368c9ac1aa685821916fadba32f5d1ef"}, {"url": "https://git.kernel.org/stable/c/115103f6e3f1c26c473766c16439c7c8b235529a"}, {"url": "https://git.kernel.org/stable/c/d71dddeb5380613f9ef199f3e7368fd78fb1a46e"}, {"url": "https://git.kernel.org/stable/c/c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1"}, {"url": "https://git.kernel.org/stable/c/302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a"}, {"url": "https://git.kernel.org/stable/c/40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea"}, {"url": "https://git.kernel.org/stable/c/d10a87a3535cce2b890897914f5d0d83df669c63"}], "title": "wl1251: Fix possible buffer overflow in wl1251_cmd_scan", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-11-13T22:00:32.437065Z", "id": "CVE-2021-47347", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-13T22:01:36.157Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.562Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/57ad99ae3c6738ba87bad259bb57c641ca68ebf6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d3d8b9c9c7843dce31e284927d4c9904fd5a510a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/0f6c0488368c9ac1aa685821916fadba32f5d1ef", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/115103f6e3f1c26c473766c16439c7c8b235529a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d71dddeb5380613f9ef199f3e7368fd78fb1a46e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d10a87a3535cce2b890897914f5d0d83df669c63", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/57ad99ae3c6738ba87bad259bb57c641ca68ebf6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d3d8b9c9c7843dce31e284927d4c9904fd5a510a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/0f6c0488368c9ac1aa685821916fadba32f5d1ef", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/115103f6e3f1c26c473766c16439c7c8b235529a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d71dddeb5380613f9ef199f3e7368fd78fb1a46e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/d10a87a3535cce2b890897914f5d0d83df669c63", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.562Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-47347", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2024-11-13T22:00:32.437065Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-120", "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-28T18:30:51.517Z"}}], "cna": {"title": "wl1251: Fix possible buffer overflow in wl1251_cmd_scan", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The overflow is reached only when a local process supplies an SSID via nl80211 NL80211_CMD_TRIGGER_SCAN or WEXT SIOCSIWSCAN into wl1251_op_hw_scan\u2192wl1251_cmd_scan; the copied bytes are not taken from over-the-air frames, so this is Local rather than Adjacent.\nAC:L - Once an oversized ssid_len reaches wl1251_cmd_scan, the unbounded memcpy into ssid[32] is fully deterministic with no race or layout dependency; the driver performs no length check of its own, so attack complexity is Low.\nPR:L - NL80211_CMD_TRIGGER_SCAN uses GENL_UNS_ADMIN_PERM (CAP_NET_ADMIN in the wiphy netns), which per kernel CNA guidance is Low rather than High, and on typical wl1251 embedded/desktop deployments that capability is delegated to ordinary sessions via wpa_supplicant/NetworkManager.\nUI:N - The attacker issues the scan or connect-driven scan request themselves; no separate victim action such as opening a crafted file is required.\nS:U - Corruption is confined to the host kernel wl1251 command buffer and the same OS security authority; it is not a VM escape, IOMMU bypass, or other cross-boundary impact.\nC:H - An oversized ssid_len causes both an out-of-bounds write past ssid[32] and an out-of-bounds read from the source SSID buffer into adjacent kernel memory in the scan request, which per OOB/memory-corruption guidance is High confidentiality impact.\nI:H - The unchecked memcpy is an attacker-controlled out-of-bounds write past the 32-byte ssid field into adjacent cmd->channels[] (then submitted to firmware), and out-of-bounds writes are scored High integrity.\nA:H - Kernel memory corruption from the unbounded copy can oops/panic under hardened kernels, and corrupting the firmware scan command can wedge or crash the wl1251 path, so availability impact is High."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "57ad99ae3c6738ba87bad259bb57c641ca68ebf6", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "d3d8b9c9c7843dce31e284927d4c9904fd5a510a", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "0f6c0488368c9ac1aa685821916fadba32f5d1ef", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "115103f6e3f1c26c473766c16439c7c8b235529a", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "d71dddeb5380613f9ef199f3e7368fd78fb1a46e", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea", "versionType": "git"}, {"status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "lessThan": "d10a87a3535cce2b890897914f5d0d83df669c63", "versionType": "git"}], "programFiles": ["drivers/net/wireless/ti/wl1251/cmd.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.31", "versionType": "semver"}, {"status": "unaffected", "version": "4.4.276", "versionType": "semver", "lessThanOrEqual": "4.4.*"}, {"status": "unaffected", "version": "4.9.276", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.240", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.198", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.133", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.51", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.12.18", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13.3", "versionType": "semver", "lessThanOrEqual": "5.13.*"}, {"status": "unaffected", "version": "5.14", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/wireless/ti/wl1251/cmd.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/57ad99ae3c6738ba87bad259bb57c641ca68ebf6"}, {"url": "https://git.kernel.org/stable/c/d3d8b9c9c7843dce31e284927d4c9904fd5a510a"}, {"url": "https://git.kernel.org/stable/c/0f6c0488368c9ac1aa685821916fadba32f5d1ef"}, {"url": "https://git.kernel.org/stable/c/115103f6e3f1c26c473766c16439c7c8b235529a"}, {"url": "https://git.kernel.org/stable/c/d71dddeb5380613f9ef199f3e7368fd78fb1a46e"}, {"url": "https://git.kernel.org/stable/c/c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1"}, {"url": "https://git.kernel.org/stable/c/302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a"}, {"url": "https://git.kernel.org/stable/c/40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea"}, {"url": "https://git.kernel.org/stable/c/d10a87a3535cce2b890897914f5d0d83df669c63"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwl1251: Fix possible buffer overflow in wl1251_cmd_scan\n\nFunction wl1251_cmd_scan calls memcpy without checking the length.\nHarden by checking the length is within the maximum allowed size."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.4.276", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.276", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.240", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.198", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.133", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.51", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.18", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13.3", "versionStartIncluding": "2.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.14", "versionStartIncluding": "2.6.31"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:47:22.692Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47347", "state": "PUBLISHED", "dateUpdated": "2026-08-05T08:47:22.692Z", "dateReserved": "2024-05-21T14:28:16.981Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:35:52.947Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/ti/wl1251/cmd.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "57ad99ae3c6738ba87bad259bb57c641ca68ebf6", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "d3d8b9c9c7843dce31e284927d4c9904fd5a510a", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "0f6c0488368c9ac1aa685821916fadba32f5d1ef", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "115103f6e3f1c26c473766c16439c7c8b235529a", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "d71dddeb5380613f9ef199f3e7368fd78fb1a46e", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}, {"lessThan": "d10a87a3535cce2b890897914f5d0d83df669c63", "status": "affected", "version": "2f01a1f58889fbfeb68b1bc1b52e4197f3333490", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/ti/wl1251/cmd.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"lessThan": "2.6.31", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.4.*", "status": "unaffected", "version": "4.4.276", "versionType": "semver"}, {"lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.276", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.240", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.198", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.133", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.51", "versionType": "semver"}, {"lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.18", "versionType": "semver"}, {"lessThanOrEqual": "5.13.*", "status": "unaffected", "version": "5.13.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.14", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "10282F37-B17F-4974-967E-FCD5ABC9AB8E", "versionEndExcluding": "4.4.276", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C79FFC06-9530-4CD7-B651-01D786CC925E", "versionEndExcluding": "4.9.276", "versionStartIncluding": "4.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FB359B2E-773D-4D52-9915-E07A47ABE72B", "versionEndExcluding": "4.14.240", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B93AEDB9-C52B-4222-8F9A-882DAD9EF5B2", "versionEndExcluding": "4.19.198", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "65A8F1FF-5639-455A-8BF4-9FF529240505", "versionEndExcluding": "5.4.133", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "93289127-DFB3-4515-89DD-50521FF8B7FF", "versionEndExcluding": "5.10.51", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "79D13C82-E06F-4A70-A3D1-C09494FBC94D", "versionEndExcluding": "5.12.18", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "853187F6-707A-487B-95C0-621B5211B43C", "versionEndExcluding": "5.13.3", "versionStartIncluding": "5.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwl1251: Fix possible buffer overflow in wl1251_cmd_scan\n\nFunction wl1251_cmd_scan calls memcpy without checking the length.\nHarden by checking the length is within the maximum allowed size."}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: wl1251: corrige posible desbordamiento del buffer en wl1251_cmd_scan. La funci\u00f3n wl1251_cmd_scan llama a memcpy sin comprobar la longitud. Endurecer comprobando que el largo est\u00e9 dentro del tama\u00f1o m\u00e1ximo permitido."}], "id": "CVE-2021-47347", "lastModified": "2026-08-04T10:16:59.057", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47347", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-11-13T22:00:32.437065Z", "version": "2.0.3"}}]}, "published": "2024-05-21T15:15:21.287", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0f6c0488368c9ac1aa685821916fadba32f5d1ef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/115103f6e3f1c26c473766c16439c7c8b235529a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/57ad99ae3c6738ba87bad259bb57c641ca68ebf6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d10a87a3535cce2b890897914f5d0d83df669c63"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3d8b9c9c7843dce31e284927d4c9904fd5a510a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d71dddeb5380613f9ef199f3e7368fd78fb1a46e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0f6c0488368c9ac1aa685821916fadba32f5d1ef"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/115103f6e3f1c26c473766c16439c7c8b235529a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/57ad99ae3c6738ba87bad259bb57c641ca68ebf6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d10a87a3535cce2b890897914f5d0d83df669c63"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3d8b9c9c7843dce31e284927d4c9904fd5a510a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d71dddeb5380613f9ef199f3e7368fd78fb1a46e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: wl1251: Fix possible buffer overflow in wl1251_cmd_scan", "id": "2282407", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282407"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-122", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwl1251: Fix possible buffer overflow in wl1251_cmd_scan\nFunction wl1251_cmd_scan calls memcpy without checking the length.\nHarden by checking the length is within the maximum allowed size."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47347", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47347\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47347\nhttps://lore.kernel.org/linux-cve-announce/2024052139-CVE-2021-47347-82e1@gregkh/T"], "statement": "This vulnerability is rated as a moderate severity because this issue can lead to a system crash or instability, it does not pose an immediate security risk or data compromise.", "threat_severity": "Moderate"}

{}