{ "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" } } } }