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CVE-2026-68230 (GCVE-0-2026-68230)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:00 – Updated: 2026-08-17 05:01
VLAI
Title
media: amlogic-c3: Add validations for ae and awb config
Summary
In the Linux kernel, the following vulnerability has been resolved: media: amlogic-c3: Add validations for ae and awb config Avoid invalid memory access if the zones_num is bigger than zone_weight. This patch fixes the following smatch errors: drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow 'cfg->zone_weight' 768 <= u32max drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow 'cfg->zone_weight' 768 <= u32max drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow 'cfg->zone_weight' 255 <= u32max drivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow 'cfg->zone_weight' 255 <= u32max
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fb2e135208f364f26b7579c191434d38655e813f , < 391fe3e36e59f3c6e3d46edfb3a5de51e00cd216 (git)
Affected: fb2e135208f364f26b7579c191434d38655e813f , < 32cbe5474e74817aa8a576b94135cc45e59f5e07 (git)
Affected: fb2e135208f364f26b7579c191434d38655e813f , < 9724164f71974a2a44a5e026614fbcc05bab6d91 (git)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/amlogic/c3/isp/c3-isp-params.c"
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          "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 \u0027cfg-\u003ezone_weight\u0027 768 \u003c= u32max\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:111 c3_isp_params_awb_wt() error: buffer overflow \u0027cfg-\u003ezone_weight\u0027 768 \u003c= u32max\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow \u0027cfg-\u003ezone_weight\u0027 255 \u003c= u32max\ndrivers/media/platform/amlogic/c3/isp/c3-isp-params.c:227 c3_isp_params_ae_wt() error: buffer overflow \u0027cfg-\u003ezone_weight\u0027 255 \u003c= u32max"
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              "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 \u2014 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."
            }
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        "shortName": "Linux"
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    "datePublished": "2026-08-10T12:00:53.425Z",
    "dateReserved": "2026-07-30T09:28:09.376Z",
    "dateUpdated": "2026-08-17T05:01:18.566Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-08-11T15:34:17+00:00",
      "cve": "CVE-2026-68230",
      "id": "CVE-2026-68230",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_not_affected": "274",
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      "current_release_date": "2026-08-21T00:44:44Z",
      "cve": "CVE-2026-68230",
      "id": "CVE-2026-68230",
      "initial_release_date": "2026-08-21T00:44:44Z",
      "product_status:known_not_affected": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68230",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68230.json",
      "version": "2"
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.