{"id":"CVE-2026-52907","state":"PUBLISHED","title":"media: rockchip: rkcif: fix off by one bugs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rockchip: rkcif: fix off by one bugs\n\nChange these comparisons from > vs >= to avoid accessing one element\nbeyond the end of the arrays.\nWhile at it, use ARRAY_SIZE instead of the _MAX enum values.\n\n[fix cosmetic issues]","publishedAt":"2026-06-09T12:36:04.617Z","updatedAt":"2026-08-05T12:31:30.487Z","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":"1f2353f5a1af995efbf7bea44341aa0d03460b28","status":"affected","lessThan":"73e119036b3a799170ed89907b4273c07306d611","versionType":"git"},{"version":"1f2353f5a1af995efbf7bea44341aa0d03460b28","status":"affected","lessThan":"e4056b84af0fc18c84b4e5741df04ecd8ca17973","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","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/rockchip/rkcif/rkcif-capture-mipi.c"]}],"references":["https://git.kernel.org/stable/c/73e119036b3a799170ed89907b4273c07306d611","https://git.kernel.org/stable/c/e4056b84af0fc18c84b4e5741df04ecd8ca17973"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52907.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52907","state":"PUBLISHED","datePublished":"2026-06-09T12:36:04.617Z","dateUpdated":"2026-08-05T12:31:30.487Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.366Z"},"containers":{"cna":{"title":"media: rockchip: rkcif: fix off by one bugs","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rockchip: rkcif: fix off by one bugs\n\nChange these comparisons from > vs >= to avoid accessing one element\nbeyond the end of the arrays.\nWhile at it, use ARRAY_SIZE instead of the _MAX enum values.\n\n[fix cosmetic issues]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1f2353f5a1af995efbf7bea44341aa0d03460b28","status":"affected","lessThan":"73e119036b3a799170ed89907b4273c07306d611","versionType":"git"},{"version":"1f2353f5a1af995efbf7bea44341aa0d03460b28","status":"affected","lessThan":"e4056b84af0fc18c84b4e5741df04ecd8ca17973","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","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/rockchip/rkcif/rkcif-capture-mipi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/73e119036b3a799170ed89907b4273c07306d611"},{"url":"https://git.kernel.org/stable/c/e4056b84af0fc18c84b4e5741df04ecd8ca17973"}],"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 register helpers are reached only through local V4L2 capture device access (open/ioctl/streamon) on Rockchip RK3568 VICAP MIPI nodes, not via any network protocol.\nAC:L - No races or special memory layout are required; once out-of-range block/id/index values reach the helpers, the off-by-one access and resulting MMIO operations occur deterministically during normal streaming or IRQ handling.\nPR:L - Exploitation requires only local access to the V4L2 video capture device node (typically granted to unprivileged users in the video group), not root in the init namespace or special capabilities.\nUI:N - An attacker with access to the capture device can trigger the code path themselves via standard V4L2 streaming ioctls without requiring action from another user.\nS:U - Impact is confined to kernel/driver memory and Rockchip VICAP hardware programming within the same security authority; there is no VM, container, or IOMMU boundary crossing.\nC:H - The flaw is an out-of-bounds read of kernel match_data register tables; per guidance, OOB reads can leak adjacent kernel memory and enable crafting unintended MMIO offsets.\nI:H - The OOB-read value is summed into a hardware register address used by writel(), enabling misdirected MMIO writes including DMA address registers programmed during buffer queue operations.\nA:H - Out-of-bounds access can trigger KASAN/KFENCE faults or misprogrammed capture hardware leading to kernel oops, panic, or hung capture on affected Rockchip embedded systems."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:31:30.487Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}