CVE-2022-49803

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/netdevsim/dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7d79725a7073d86b9185f87718e22f3d65115801", "status": "affected", "version": "d3cbb907ae57fe5da314b51d949b617b538bdeae", "versionType": "git"}, {"lessThan": "6d463ddd0107d4188229d996dcdd45c99bad8af7", "status": "affected", "version": "d3cbb907ae57fe5da314b51d949b617b538bdeae", "versionType": "git"}, {"lessThan": "207edad5717e0a5709ce8467f0eff41c607835c9", "status": "affected", "version": "d3cbb907ae57fe5da314b51d949b617b538bdeae", "versionType": "git"}, {"lessThan": "064bc7312bd09a48798418663090be0c776183db", "status": "affected", "version": "d3cbb907ae57fe5da314b51d949b617b538bdeae", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/netdevsim/dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.260", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.209", "versionType": "semver"}, {"lessThanOrEqual": "6.0.*", "status": "unaffected", "version": "6.0.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "25ED8B13-F842-4669-8961-136863DA8006", "versionEndExcluding": "6.0.10", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: Fix memory leak of nsim_dev->fa_cookie\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff8881bac872d0 (size 8):\n comm \"sh\", pid 58603, jiffies 4481524462 (age 68.065s)\n hex dump (first 8 bytes):\n 04 00 00 00 de ad be ef ........\n backtrace:\n [<00000000c80b8577>] __kmalloc+0x49/0x150\n [<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim]\n [<0000000093d78e77>] full_proxy_write+0xf3/0x180\n [<000000005a662c16>] vfs_write+0x1c5/0xaf0\n [<000000007aabf84a>] ksys_write+0xed/0x1c0\n [<000000005f1d2e47>] do_syscall_64+0x3b/0x90\n [<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe issue occurs in the following scenarios:\n\nnsim_dev_trap_fa_cookie_write()\n kmalloc() fa_cookie\n nsim_dev->fa_cookie = fa_cookie\n..\nnsim_drv_remove()\n\nThe fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To\nfix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netdevsim: Se corrige la p\u00e9rdida de memoria de nsim_dev-&gt;fa_cookie. kmemleak informa de este problema: objeto sin referencia 0xffff8881bac872d0 (tama\u00f1o 8): comm \"sh\", pid 58603, jiffies 4481524462 (edad 68,065 s) volcado hexadecimal (primeros 8 bytes): 04 00 00 00 de ad be ef ........ backtrace: [&lt;00000000c80b8577&gt;] __kmalloc+0x49/0x150 [&lt;000000005292b8c6&gt;] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim] [&lt;0000000093d78e77&gt;] escritura de proxy completo+0xf3/0x180 [&lt;000000005a662c16&gt;] escritura de vfs+0x1c5/0xaf0 [&lt;000000007aabf84a&gt;] escritura de ksys+0xed/0x1c0 [&lt;000000005f1d2e47&gt;] llamada al sistema_64+0x3b/0x90 [&lt;000000006001c6ec&gt;] entrada_SYSCALL_64_after_hwframe+0x63/0xcd El problema ocurre en los siguientes escenarios: nsim_dev_trap_fa_cookie_write() kmalloc() fa_cookie nsim_dev-&gt;fa_cookie = fa_cookie .. nsim_drv_remove(): La fa_cookie bloqueada en nsim_dev_trap_fa_cookie_write() no se libera. Para solucionarlo, a\u00f1ada kfree(nsim_dev-&gt;fa_cookie) a nsim_drv_remove()."}], "id": "CVE-2022-49803", "lastModified": "2026-11-05T20:17:12.897", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-49803", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T19:48:58.960400Z", "version": "2.0.3"}}]}, "published": "2025-05-01T15:16:03.617", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/064bc7312bd09a48798418663090be0c776183db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/207edad5717e0a5709ce8467f0eff41c607835c9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d463ddd0107d4188229d996dcdd45c99bad8af7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7d79725a7073d86b9185f87718e22f3d65115801"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: netdevsim: Fix memory leak of nsim_dev->fa_cookie", "id": "2363501", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363501"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetdevsim: Fix memory leak of nsim_dev->fa_cookie\nkmemleak reports this issue:\nunreferenced object 0xffff8881bac872d0 (size 8):\ncomm \"sh\", pid 58603, jiffies 4481524462 (age 68.065s)\nhex dump (first 8 bytes):\n04 00 00 00 de ad be ef ........\nbacktrace:\n[<00000000c80b8577>] __kmalloc+0x49/0x150\n[<000000005292b8c6>] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim]\n[<0000000093d78e77>] full_proxy_write+0xf3/0x180\n[<000000005a662c16>] vfs_write+0x1c5/0xaf0\n[<000000007aabf84a>] ksys_write+0xed/0x1c0\n[<000000005f1d2e47>] do_syscall_64+0x3b/0x90\n[<000000006001c6ec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\nThe issue occurs in the following scenarios:\nnsim_dev_trap_fa_cookie_write()\nkmalloc() fa_cookie\nnsim_dev->fa_cookie = fa_cookie\n..\nnsim_drv_remove()\nThe fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To\nfix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove()."], "name": "CVE-2022-49803", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49803\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49803\nhttps://lore.kernel.org/linux-cve-announce/2025050127-CVE-2022-49803-38e4@gregkh/T"], "statement": "A memory leak in the netdevsim driver due to a missing kfree() for fa_cookie could result in slow memory consumption over time. The issue is low-risk and affects only local users with control over simulated network devices.", "threat_severity": "Moderate"}

{}