CVE-2024-35948 bcachefs: Check for journal entries overruning end of sb clean section

2024-05-2009:17:34

Linux

github.com

linux kernel

bcachefs

vulnerability

bounds check

superblock validation

repair code

AI Score

Confidence

High

EPSS

Percentile

9.0%

SSVC

Exploitation

none

Automatable

Technical Impact

total

JSON

In the Linux kernel, the following vulnerability has been resolved:

bcachefs: Check for journal entries overruning end of sb clean section

Fix a missing bounds check in superblock validation.

Note that we don’t yet have repair code for this case - repair code for
individual items is generally low priority, since the whole superblock
is checksummed, validated prior to write, and we have backups.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "1da177e4c3f4",
        "lessThan": "fcdbc1d7a4b6",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/bcachefs/sb-clean.c",
      "fs/bcachefs/sb-errors_types.h"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "unaffected",
        "version": "6.9",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/bcachefs/sb-clean.c",
      "fs/bcachefs/sb-errors_types.h"
    ],
    "defaultStatus": "affected"
  }
]

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
    ],
    "vendor": "linux",
    "product": "linux_kernel",
    "versions": [
      {
        "status": "affected",
        "version": "1da177e4c3f4",
        "lessThan": "fcdbc1d7a4b6",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "cpes": [
      "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
    ],
    "vendor": "linux",
    "product": "linux_kernel",
    "versions": [
      {
        "status": "unaffected",
        "version": "0",
        "versionType": "custom",
        "lessThanOrEqual": "6.9"
      }
    ],
    "defaultStatus": "unknown"
  }
]