CVE-2022-49162

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entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFix it by removing the open-coded endianness fixup-code."}], "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 bug is reached only via write(2) on the local fbdev node (/dev/fbN) through vfs_write \u2192 fb_write \u2192 smtcfb_write; it is a PCI framebuffer driver with no network-facing path.\nAC:L - An attacker can reliably trigger the OOB write by writing a 1- or 3-byte payload at offset 0; no races or attacker-uncontrollable conditions are required.\nPR:L - fb_open/fb_write impose no capability checks\u2014access is only DAC on /dev/fb*, typically granted to unprivileged video-group or console users on the embedded/kiosk systems that ship SM712/SM720 hardware.\nUI:N - The attacker opens the framebuffer device and writes the crafted payload themselves; no separate victim action is required.\nS:U - Impact stays within the host kernel/device authority (crash or MMIO corruption); there is no VM, IOMMU, or other security-boundary crossing.\nC:H - This is attacker-controlled out-of-bounds memory corruption; on SM720 screen_base sits 2MB into a shared ioremap with device registers, so the OOB poke hits mapped MMIO and is treatable as corruption that can be leveraged for disclosure.\nI:H - The broken endian remainder path does `--dst8` and fb_writeb() of attacker-controlled bytes before the intended destination\u2014an explicit out-of-bounds write into either unmapped space or (on SM720) the mapped register aperture.\nA:H - The reported reproducer causes a kernel oops (page fault in smtcfb_write), which is a high availability impact; MMIO corruption can also hang or disable the display path."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", 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"https://git.kernel.org/stable/c/4f01d09b2bbfbcb47b3eb305560a7f4857a32260"}], "title": "video: fbdev: sm712fb: Fix crash in smtcfb_write()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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"version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.311", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.276", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.238", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.189", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.110", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.33", "versionType": "semver"}, {"lessThanOrEqual": "5.16.*", "status": "unaffected", "version": "5.16.19", "versionType": "semver"}, {"lessThanOrEqual": "5.17.*", "status": "unaffected", "version": "5.17.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C86EFD13-93D4-4385-83E8-C665BE8F570F", "versionEndExcluding": "4.9.311", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D9B028C-6313-47F9-94B7-5F8122345E49", "versionEndExcluding": "4.14.276", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA28527A-11D3-41D2-9C4C-ECAC0D6A4A2D", "versionEndExcluding": "4.19.238", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8CB6E8F5-C2B1-46F3-A807-0F6104AC340F", "versionEndExcluding": "5.4.189", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": 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writes three bytes to the framebuffer, the\ndriver will crash:\n\n BUG: unable to handle page fault for address: ffffc90001ffffff\n RIP: 0010:smtcfb_write+0x454/0x5b0\n Call Trace:\n vfs_write+0x291/0xd60\n ? do_sys_openat2+0x27d/0x350\n ? __fget_light+0x54/0x340\n ksys_write+0xce/0x190\n do_syscall_64+0x43/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFix it by removing the open-coded endianness fixup-code."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: sm712fb: Se corrige el fallo en smtcfb_write() Cuando el controlador sm712fb escribe tres bytes en el framebuffer, el controlador se bloquear\u00e1: ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffffc90001ffffff RIP: 0010:smtcfb_write+0x454/0x5b0 Rastreo de llamadas: vfs_write+0x291/0xd60 ? do_sys_openat2+0x27d/0x350 ? __fget_light+0x54/0x340 ksys_write+0xce/0x190 do_syscall_64+0x43/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae Solucione el problema eliminando el c\u00f3digo de correcci\u00f3n de endianness de c\u00f3digo abierto."}], "id": "CVE-2022-49162", "lastModified": "2026-08-04T10:17:37.010", "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": "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"}]}, "published": "2025-02-26T07:00:53.373", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0ec746674296c94137f074309c26d17e644c0498"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1aea36a62f0a0ad67eccc945bac0bd6422ef720f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3b36c05f68ba32d0dfb63abc9016d6fe9117829f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4f01d09b2bbfbcb47b3eb305560a7f4857a32260"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/809b8cde86320698661eec677222bc5c5df76176"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aeb635b49530b7d19e140949753409f759ba99be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b1c28577529cdfad40c8242673285f1e1e4c314e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eae90015d10f0c9a47fc4adccba4cd79dce664e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fb791514acf9070225eed46e1ccbb0aa7aae5da5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: video: fbdev: sm712fb: Fix crash in smtcfb_write()", "id": "2348027", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348027"}, "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:\nvideo: fbdev: sm712fb: Fix crash in smtcfb_write()\nWhen the sm712fb driver writes three bytes to the framebuffer, the\ndriver will crash:\nBUG: unable to handle page fault for address: ffffc90001ffffff\nRIP: 0010:smtcfb_write+0x454/0x5b0\nCall Trace:\nvfs_write+0x291/0xd60\n? do_sys_openat2+0x27d/0x350\n? __fget_light+0x54/0x340\nksys_write+0xce/0x190\ndo_syscall_64+0x43/0x90\nentry_SYSCALL_64_after_hwframe+0x44/0xae\nFix it by removing the open-coded endianness fixup-code."], "name": "CVE-2022-49162", "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": "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": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49162\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49162\nhttps://lore.kernel.org/linux-cve-announce/2025022611-CVE-2022-49162-654f@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T16:01:20.274232+00:00", "updated": "2025-07-12T16:01:20.274315+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}