{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix inconsistent per-file compression format\n\nEROFS can select compression algorithms on a per-file basis, and each\nper-file compression algorithm needs to be marked in the on-disk\nsuperblock for initialization.\n\nHowever, syzkaller can generate inconsistent crafted images that use\nan unsupported algorithmtype for specific inodes, e.g. use MicroLZMA\nalgorithmtype even it's not set in `sbi->available_compr_algs`.  This\ncan lead to an unexpected \"BUG: kernel NULL pointer dereference\" if\nthe corresponding decompressor isn't built-in.\n\nFix this by checking against `sbi->available_compr_algs` for each\nm_algorithmformat request.  Incorrect !erofs_sb_has_compr_cfgs preset\nbitmap is now fixed together since it was harmless previously."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/erofs/decompressor.c",
                  "fs/erofs/zmap.c"
               ],
               "versions": [
                  {
                     "version": "8f89926290c4",
                     "lessThan": "47467e04816c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8f89926290c4",
                     "lessThan": "823ba1d21060",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8f89926290c4",
                     "lessThan": "eed24b816e50",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8f89926290c4",
                     "lessThan": "118a8cf504d7",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/erofs/decompressor.c",
                  "fs/erofs/zmap.c"
               ],
               "versions": [
                  {
                     "version": "5.16",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.16",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.80",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.14",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.2",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/47467e04816cb297905c0f09bc2d11ef865942d9"
            },
            {
               "url": "https://git.kernel.org/stable/c/823ba1d2106019ddf195287ba53057aee33cf724"
            },
            {
               "url": "https://git.kernel.org/stable/c/eed24b816e50c6cd18cbee0ff0d7218c8fced199"
            },
            {
               "url": "https://git.kernel.org/stable/c/118a8cf504d7dfa519562d000f423ee3ca75d2c4"
            }
         ],
         "title": "erofs: fix inconsistent per-file compression format",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26590",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}