CVE-2026-68279

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68279", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.379Z", "datePublished": "2026-08-10T12:02:09.423Z", "dateUpdated": "2026-11-06T16:55:12.050Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:46:16.563Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers\n\ndrm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw\nmessage and then unconditionally does:\n\n memcpy(bytes, &raw->msg[idx], num_bytes);\n\nwithout checking that idx + num_bytes <= raw->curlen. raw->msg[] is\n256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger\nthan the remaining payload, the memcpy reads past the received data\ninto whatever follows in raw->msg[].\n\ndrm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted\nwith a /* TODO check */ comment since the code was introduced).\n\nFix both functions by using a single combined check\n(idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8,\nit is always >= 0, so this strictly subsumes the simpler idx > curlen\nform and no separate step is needed.\n\n[added missing fixes tag]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/display/drm_dp_mst_topology.c"], "versions": [{"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "185de1d74e658e2edb723ba76fa61903f77d8a68", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "c2fbda0fe0163c55ba3820ee6cea0c6b43622eda", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "04d953f50d61e542e94a5977822cc53735f8c0ce", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "533d9e2bede4aeefdc2a0561d7071cfede95958f", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "e6ef5455b06cb4e5d181aabcd723791587c79f12", "status": "affected", "versionType": "git"}, {"version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "1a8f537f5a1eeac941f262fe73078d6b08ba83c0", "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/gpu/drm/display/drm_dp_mst_topology.c"], "versions": [{"version": "3.17", "status": "affected"}, {"version": "0", "lessThan": "3.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.266", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.217", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "3.17", "versionEndExcluding": "5.10.266"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.15.217"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/185de1d74e658e2edb723ba76fa61903f77d8a68"}, {"url": "https://git.kernel.org/stable/c/d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586"}, {"url": "https://git.kernel.org/stable/c/c2fbda0fe0163c55ba3820ee6cea0c6b43622eda"}, {"url": "https://git.kernel.org/stable/c/22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2"}, {"url": "https://git.kernel.org/stable/c/04d953f50d61e542e94a5977822cc53735f8c0ce"}, {"url": "https://git.kernel.org/stable/c/533d9e2bede4aeefdc2a0561d7071cfede95958f"}, {"url": "https://git.kernel.org/stable/c/e6ef5455b06cb4e5d181aabcd723791587c79f12"}, {"url": "https://git.kernel.org/stable/c/1a8f537f5a1eeac941f262fe73078d6b08ba83c0"}], "title": "drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68279", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:46:35.840828Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:55:12.050Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68279", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:46:35.840828Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:46:36.802Z"}}], "cna": {"title": "drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "185de1d74e658e2edb723ba76fa61903f77d8a68", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "c2fbda0fe0163c55ba3820ee6cea0c6b43622eda", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "04d953f50d61e542e94a5977822cc53735f8c0ce", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "533d9e2bede4aeefdc2a0561d7071cfede95958f", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "e6ef5455b06cb4e5d181aabcd723791587c79f12", "versionType": "git"}, {"status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "lessThan": "1a8f537f5a1eeac941f262fe73078d6b08ba83c0", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/display/drm_dp_mst_topology.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.17"}, {"status": "unaffected", "version": "0", "lessThan": "3.17", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.266", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.217", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/display/drm_dp_mst_topology.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/185de1d74e658e2edb723ba76fa61903f77d8a68"}, {"url": "https://git.kernel.org/stable/c/d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586"}, {"url": "https://git.kernel.org/stable/c/c2fbda0fe0163c55ba3820ee6cea0c6b43622eda"}, {"url": "https://git.kernel.org/stable/c/22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2"}, {"url": "https://git.kernel.org/stable/c/04d953f50d61e542e94a5977822cc53735f8c0ce"}, {"url": "https://git.kernel.org/stable/c/533d9e2bede4aeefdc2a0561d7071cfede95958f"}, {"url": "https://git.kernel.org/stable/c/e6ef5455b06cb4e5d181aabcd723791587c79f12"}, {"url": "https://git.kernel.org/stable/c/1a8f537f5a1eeac941f262fe73078d6b08ba83c0"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers\n\ndrm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw\nmessage and then unconditionally does:\n\n memcpy(bytes, &raw->msg[idx], num_bytes);\n\nwithout checking that idx + num_bytes <= raw->curlen. raw->msg[] is\n256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger\nthan the remaining payload, the memcpy reads past the received data\ninto whatever follows in raw->msg[].\n\ndrm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted\nwith a /* TODO check */ comment since the code was introduced).\n\nFix both functions by using a single combined check\n(idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8,\nit is always >= 0, so this strictly subsumes the simpler idx > curlen\nform and no separate step is needed.\n\n[added missing fixes tag]"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.266", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.217", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "3.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "3.17"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:46:16.563Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68279", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:55:12.050Z", "dateReserved": "2026-07-30T09:28:09.379Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T12:02:09.423Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/display/drm_dp_mst_topology.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "185de1d74e658e2edb723ba76fa61903f77d8a68", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "c2fbda0fe0163c55ba3820ee6cea0c6b43622eda", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "04d953f50d61e542e94a5977822cc53735f8c0ce", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "533d9e2bede4aeefdc2a0561d7071cfede95958f", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "e6ef5455b06cb4e5d181aabcd723791587c79f12", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}, {"lessThan": "1a8f537f5a1eeac941f262fe73078d6b08ba83c0", "status": "affected", "version": "ad7f8a1f9ced7f049f9b66d588723f243a7034cd", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/display/drm_dp_mst_topology.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.17"}, {"lessThan": "3.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.266", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.217", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers\n\ndrm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw\nmessage and then unconditionally does:\n\n memcpy(bytes, &raw->msg[idx], num_bytes);\n\nwithout checking that idx + num_bytes <= raw->curlen. raw->msg[] is\n256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger\nthan the remaining payload, the memcpy reads past the received data\ninto whatever follows in raw->msg[].\n\ndrm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted\nwith a /* TODO check */ comment since the code was introduced).\n\nFix both functions by using a single combined check\n(idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8,\nit is always >= 0, so this strictly subsumes the simpler idx > curlen\nform and no separate step is needed.\n\n[added missing fixes tag]"}], "id": "CVE-2026-68279", "lastModified": "2026-11-06T17:19:27.853", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68279", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:46:35.840828Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:17.047", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/04d953f50d61e542e94a5977822cc53735f8c0ce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/185de1d74e658e2edb723ba76fa61903f77d8a68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a8f537f5a1eeac941f262fe73078d6b08ba83c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/533d9e2bede4aeefdc2a0561d7071cfede95958f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c2fbda0fe0163c55ba3820ee6cea0c6b43622eda"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e6ef5455b06cb4e5d181aabcd723791587c79f12"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Out-of-bounds read in DP MST sideband reply parsers", "id": "2513344", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513344"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers\ndrm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw\nmessage and then unconditionally does:\nmemcpy(bytes, &raw->msg[idx], num_bytes);\nwithout checking that idx + num_bytes <= raw->curlen. raw->msg[] is\n256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger\nthan the remaining payload, the memcpy reads past the received data\ninto whatever follows in raw->msg[].\ndrm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted\nwith a /* TODO check */ comment since the code was introduced).\nFix both functions by using a single combined check\n(idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8,\nit is always >= 0, so this strictly subsumes the simpler idx > curlen\nform and no separate step is needed.\n[added missing fixes tag]", "A flaw was found in the Linux kernel's DisplayPort (DP) Multi-Stream Transport (MST) subsystem. A malicious or misbehaving MST hub could send a specially crafted sideband message that causes an out-of-bounds read in the `drm_dp_sideband_parse_remote_dpcd_read()` and `drm_dp_sideband_parse_remote_i2c_read_ack()` functions. This vulnerability allows the system to read past the intended data, potentially leading to information disclosure or system instability."], "name": "CVE-2026-68279", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:02:09Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68279\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68279\nhttps://git.kernel.org/stable/c/04d953f50d61e542e94a5977822cc53735f8c0ce\nhttps://git.kernel.org/stable/c/1a8f537f5a1eeac941f262fe73078d6b08ba83c0\nhttps://git.kernel.org/stable/c/22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2\nhttps://git.kernel.org/stable/c/533d9e2bede4aeefdc2a0561d7071cfede95958f\nhttps://git.kernel.org/stable/c/e6ef5455b06cb4e5d181aabcd723791587c79f12"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7f8a1f9ced7f049f9b66d588723f243a7034cd,22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7f8a1f9ced7f049f9b66d588723f243a7034cd,04d953f50d61e542e94a5977822cc53735f8c0ce)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7f8a1f9ced7f049f9b66d588723f243a7034cd,533d9e2bede4aeefdc2a0561d7071cfede95958f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7f8a1f9ced7f049f9b66d588723f243a7034cd,e6ef5455b06cb4e5d181aabcd723791587c79f12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad7f8a1f9ced7f049f9b66d588723f243a7034cd,1a8f537f5a1eeac941f262fe73078d6b08ba83c0)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T15:30:05.873259+00:00", "updated": "2026-08-13T06:15:15.345983+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}