CVE-2024-34027 f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock

2024-06-2413:56:49

Linux

github.com

linux kernel

f2fs

compress

fix

reserve

release

cp_rwsem lock

racing

checkpoint

spo

filesystem metadata

6.9 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

10.4%

JSON

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

f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock

It needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
to avoid racing with checkpoint, otherwise, filesystem metadata including
blkaddr in dnode, inode fields and .total_valid_block_count may be
corrupted after SPO case.

CNA Affected

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "c75488fb4d82",
        "lessThan": "a6e1f7744e9b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c75488fb4d82",
        "lessThan": "b5bac43875aa",
        "versionType": "git"
      },
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        "status": "affected",
        "version": "c75488fb4d82",
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        "status": "affected",
        "version": "c75488fb4d82",
        "lessThan": "329edb7c9e3b",
        "versionType": "git"
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        "status": "affected",
        "version": "c75488fb4d82",
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        "status": "affected",
        "version": "c75488fb4d82",
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        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/f2fs/file.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.8",
        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "5.10.219",
        "versionType": "custom",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.161",
        "versionType": "custom",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.93",
        "versionType": "custom",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.33",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.9.4",
        "versionType": "custom",
        "lessThanOrEqual": "6.9.*"
      },
      {
        "status": "unaffected",
        "version": "6.10-rc1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/f2fs/file.c"
    ],
    "defaultStatus": "affected"
  }
]