{"id":"CVE-2026-43222","state":"PUBLISHED","title":"media: verisilicon: AV1: Fix tile info buffer size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: verisilicon: AV1: Fix tile info buffer size\n\nEach tile info is composed of: row_sb, col_sb, start_pos\nand end_pos (4 bytes each). So the total required memory\nis AV1_MAX_TILES * 16 bytes.\nUse the correct #define to allocate the buffer and avoid\nwriting tile info in non-allocated memory.","publishedAt":"2026-05-06T11:28:22.291Z","updatedAt":"2026-08-05T12:26:41.823Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"a5b1ddbe31f49b4da78642157589970e9b60a231","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"34f36f9c6114af781a5a4f7a7c99334c85b73fc7","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"f122f2b3ce9dbde60bf7ab0b180fe4a01f9d9bc4","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"74abfadd7ef5ac9f3a6111d550cc651d1457c641","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"a505ca2db89ad92a8d8d27fa68ebafb12e04a679","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c"]}],"references":["https://git.kernel.org/stable/c/a5b1ddbe31f49b4da78642157589970e9b60a231","https://git.kernel.org/stable/c/34f36f9c6114af781a5a4f7a7c99334c85b73fc7","https://git.kernel.org/stable/c/f122f2b3ce9dbde60bf7ab0b180fe4a01f9d9bc4","https://git.kernel.org/stable/c/74abfadd7ef5ac9f3a6111d550cc651d1457c641","https://git.kernel.org/stable/c/a505ca2db89ad92a8d8d27fa68ebafb12e04a679"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43222.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43222","state":"PUBLISHED","datePublished":"2026-05-06T11:28:22.291Z","dateUpdated":"2026-08-05T12:26:41.823Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.994Z"},"containers":{"cna":{"title":"media: verisilicon: AV1: Fix tile info buffer size","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: verisilicon: AV1: Fix tile info buffer size\n\nEach tile info is composed of: row_sb, col_sb, start_pos\nand end_pos (4 bytes each). So the total required memory\nis AV1_MAX_TILES * 16 bytes.\nUse the correct #define to allocate the buffer and avoid\nwriting tile info in non-allocated memory."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"a5b1ddbe31f49b4da78642157589970e9b60a231","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"34f36f9c6114af781a5a4f7a7c99334c85b73fc7","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"f122f2b3ce9dbde60bf7ab0b180fe4a01f9d9bc4","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"74abfadd7ef5ac9f3a6111d550cc651d1457c641","versionType":"git"},{"version":"727a400686a2c0d25015c9e44916a59b72882f83","status":"affected","lessThan":"a505ca2db89ad92a8d8d27fa68ebafb12e04a679","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a5b1ddbe31f49b4da78642157589970e9b60a231"},{"url":"https://git.kernel.org/stable/c/34f36f9c6114af781a5a4f7a7c99334c85b73fc7"},{"url":"https://git.kernel.org/stable/c/f122f2b3ce9dbde60bf7ab0b180fe4a01f9d9bc4"},{"url":"https://git.kernel.org/stable/c/74abfadd7ef5ac9f3a6111d550cc651d1457c641"},{"url":"https://git.kernel.org/stable/c/a505ca2db89ad92a8d8d27fa68ebafb12e04a679"}],"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 vulnerable code is reached through local V4L2 mem2mem decoder device operations and media request/ioctl submission to the Rockchip Verisilicon AV1 decoder, not directly by packets in an in-kernel network protocol.\nAC:L - An attacker can reliably submit AV1 frame and tile group controls with enough tiles to drive the undersized tile info buffer write; no race or uncontrollable timing condition is required.\nPR:L - The driver open and decode path has no capability check, but exploitation requires local access to the decoder device node or an equivalent low-privileged local media client context.\nUI:N - A local attacker with access to the V4L2 decoder can trigger the overflow directly by issuing ioctls and queueing a decode request; no separate victim action is needed.\nS:U - The corruption occurs within the kernel driver and impacts the same kernel security authority; there is no VM, IOMMU, or cross-scope boundary involved.\nC:H - This is an out-of-bounds write from kernel context into DMA-coherent memory, and kernel memory corruption is reasonably exploitable for disclosure primitives in severe cases.\nI:H - The bug writes attacker-influenced tile metadata past an undersized allocation, so it is a kernel out-of-bounds write with potential for arbitrary memory corruption or code execution.\nA:H - Even without full exploitation, writing beyond the allocated coherent buffer can corrupt adjacent memory or allocator state and plausibly crash or hang the kernel."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:26:41.823Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}