{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68230","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.376Z","datePublished":"2026-08-10T12:00:53.425Z","dateUpdated":"2026-08-17T05:01:18.566Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:01:18.566Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: amlogic-c3: Add validations for ae and awb config\n\nAvoid invalid memory access if the zones_num is bigger than\nzone_weight.\n\nThis patch fixes the following smatch errors:\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow 'cfg->zone_weight' 768 <= u32max\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow 'cfg->zone_weight' 768 <= u32max\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow 'cfg->zone_weight' 255 <= u32max\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow 'cfg->zone_weight' 255 <= u32max"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H","baseScore":7.3,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerability is reached only through the local V4L2 meta-output device node of the Amlogic C3 ISP driver, by opening /dev/videoX and issuing VIDIOC_QBUF plus VIDIOC_STREAMON ioctls. No network or adjacent-network path exists.\nAC:L - Both horiz_zones_num and vert_zones_num are copied verbatim from the queued parameters buffer with no validation, so setting them to 0xff deterministically produces a ~64KB out-of-bounds read on every stream start. No race, timing, or memory-layout condition is involved.\nPR:L - The attacker only needs read/write access to the ISP parameters video node (typically group video, or the camera service/HAL user on Android-class devices); no CAP_SYS_ADMIN or root is required, and every ioctl on the path is unprivileged.\nUI:N - The attacking process queues the malformed parameter buffer and starts streaming entirely on its own; no action by any other user or victim process is needed.\nS:U - The out-of-bounds access occurs in kernel memory within the same security authority as the kernel itself; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - zones_num can reach 255*255=65025 against a 255-byte (AE) or 768-byte (AWB) array inside a ~1.7KB kvmalloc buffer, so up to ~64KB of adjacent kernel heap is read out of bounds and pushed into device state — a large, attacker-positioned disclosure of kernel memory rather than a few strictly bounded bytes.\nI:L - The loop performs thousands of writes (up to 8128 register writes) of out-of-bounds heap data into the auto-incrementing AE/AWB weight LUT, far beyond its 32/96-entry depth, corrupting ISP hardware configuration and the statistics delivered to userspace; no arbitrary kernel memory write is available.\nA:H - Reading ~64KB past the end of a slab object can hit an unmapped or poisoned page and oops; the same code runs from c3_isp_params_isr() in interrupt context under spinlock_irqsave, where a fault reliably results in a kernel panic, and it is also an immediate KASAN slab-out-of-bounds."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/amlogic/c3/isp/c3-isp-params.c"],"versions":[{"version":"fb2e135208f364f26b7579c191434d38655e813f","lessThan":"391fe3e36e59f3c6e3d46edfb3a5de51e00cd216","status":"affected","versionType":"git"},{"version":"fb2e135208f364f26b7579c191434d38655e813f","lessThan":"32cbe5474e74817aa8a576b94135cc45e59f5e07","status":"affected","versionType":"git"},{"version":"fb2e135208f364f26b7579c191434d38655e813f","lessThan":"9724164f71974a2a44a5e026614fbcc05bab6d91","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/media/platform/amlogic/c3/isp/c3-isp-params.c"],"versions":[{"version":"6.16","status":"affected"},{"version":"0","lessThan":"6.16","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":"6.16","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/391fe3e36e59f3c6e3d46edfb3a5de51e00cd216"},{"url":"https://git.kernel.org/stable/c/32cbe5474e74817aa8a576b94135cc45e59f5e07"},{"url":"https://git.kernel.org/stable/c/9724164f71974a2a44a5e026614fbcc05bab6d91"}],"title":"media: amlogic-c3: Add validations for ae and awb config","x_generator":{"engine":"bippy-1.2.0"}}}}