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CVE-2026-80831 (GCVE-0-2026-80831)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:54 – Updated: 2026-09-04 15:54
VLAI
Title
crypto: mxs-dcp - fix source scatterlist length access
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: mxs-dcp - fix source scatterlist length access mxs_dcp_aes_block_crypt() uses sg_dma_len() without mapping the source scatterlist with dma_map_sg() first. Therefore, sg_dma_len() is invalid and could return zero or a stale DMA length, causing encryption and decryption to process the wrong number of bytes when CONFIG_NEED_SG_DMA_LENGTH=y. Use the original scatterlist length instead.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < fd0f211b27a6ec2ebd8c315683401b43adcc5511 (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < 04201dcc88b26eac52f736e39727fc5c420b7257 (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < e72a795df521cb65b7c4705cc11078cdacfaa2f4 (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < 1537bd55b4f842565068c54b47cd2ae1777d5f8f (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < da14fae5203b72ca71ccfa9af8de9249e40d533a (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < 182f16a20d329a1c818d51dad57d9bf43d356c7c (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < 0e9edb108a63bbbef952dfcbc597e34ed9c1fb74 (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < 6ef9a4afb52cb102ab038cd42352c142d8505d09 (git)
Affected: 15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5 , < c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.14
Unaffected: 0 , < 3.14 (semver)
Unaffected: 5.10.269 , ≤ 5.10.* (semver)
Unaffected: 5.15.220 , ≤ 5.15.* (semver)
Unaffected: 6.1.187 , ≤ 6.1.* (semver)
Unaffected: 6.6.156 , ≤ 6.6.* (semver)
Unaffected: 6.12.108 , ≤ 6.12.* (semver)
Unaffected: 6.18.49 , ≤ 6.18.* (semver)
Unaffected: 7.1.13 , ≤ 7.1.* (semver)
Unaffected: 7.2.3 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-08-26T14:34:25.796Z",
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Therefore, sg_dma_len() is invalid\\nand could return zero or a stale DMA length, causing encryption and\\ndecryption to process the wrong number of bytes when\\nCONFIG_NEED_SG_DMA_LENGTH=y.\\n\\nUse the original scatterlist length instead.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/crypto/mxs-dcp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"fd0f211b27a6ec2ebd8c315683401b43adcc5511\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"04201dcc88b26eac52f736e39727fc5c420b7257\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"e72a795df521cb65b7c4705cc11078cdacfaa2f4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"1537bd55b4f842565068c54b47cd2ae1777d5f8f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"da14fae5203b72ca71ccfa9af8de9249e40d533a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"182f16a20d329a1c818d51dad57d9bf43d356c7c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"0e9edb108a63bbbef952dfcbc597e34ed9c1fb74\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"6ef9a4afb52cb102ab038cd42352c142d8505d09\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"15b59e7c3733f90ff1f7dd66ad77ae1c90bcdff5\",\"lessThan\":\"c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/crypto/mxs-dcp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.269\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.220\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.187\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.156\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.108\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.49\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.13\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.3\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/04201dcc88b26eac52f736e39727fc5c420b7257\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0e9edb108a63bbbef952dfcbc597e34ed9c1fb74\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1537bd55b4f842565068c54b47cd2ae1777d5f8f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/182f16a20d329a1c818d51dad57d9bf43d356c7c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ef9a4afb52cb102ab038cd42352c142d8505d09\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c5bcb084a9871e5b62afb5f48b60adfa13b5d9f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/da14fae5203b72ca71ccfa9af8de9249e40d533a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e72a795df521cb65b7c4705cc11078cdacfaa2f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fd0f211b27a6ec2ebd8c315683401b43adcc5511\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-08T17:16:37Z",
      "cve": "CVE-2026-80831",
      "id": "CVE-2026-80831",
      "initial_release_date": "2026-09-05T00:26:34Z",
      "product_status:known_affected": "265",
      "product_status:known_not_affected": "88",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80831",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80831.json",
      "version": "4"
    }
  }
}



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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

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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.