{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: regenerate buddy after block freeing failed if under fc replay\n\nThis mostly reverts commit 6bd97bf273bd (\"ext4: remove redundant\nmb_regenerate_buddy()\") and reintroduces mb_regenerate_buddy(). Based on\ncode in mb_free_blocks(), fast commit replay can end up marking as free\nblocks that are already marked as such. This causes corruption of the\nbuddy bitmap so we need to regenerate it in that case."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/ext4/mballoc.c"
               ],
               "versions": [
                  {
                     "version": "0983142c5f17",
                     "lessThan": "94ebf71bddbc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6bd97bf273bd",
                     "lessThan": "c1317822e2de",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6bd97bf273bd",
                     "lessThan": "78327acd4cdc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6bd97bf273bd",
                     "lessThan": "ea42d6cffb0d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6bd97bf273bd",
                     "lessThan": "6b0d48647935",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6bd97bf273bd",
                     "lessThan": "c9b528c35795",
                     "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/ext4/mballoc.c"
               ],
               "versions": [
                  {
                     "version": "5.11",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.11",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.211",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.150",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.78",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.17",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.5",
                     "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/94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a"
            },
            {
               "url": "https://git.kernel.org/stable/c/c1317822e2de80e78f137d3a2d99febab1b80326"
            },
            {
               "url": "https://git.kernel.org/stable/c/78327acd4cdc4a1601af718b781eece577b6b7d4"
            },
            {
               "url": "https://git.kernel.org/stable/c/ea42d6cffb0dd27a417f410b9d0011e9859328cb"
            },
            {
               "url": "https://git.kernel.org/stable/c/6b0d48647935e4b8c7b75d1eccb9043fcd4ee581"
            },
            {
               "url": "https://git.kernel.org/stable/c/c9b528c35795b711331ed36dc3dbee90d5812d4e"
            }
         ],
         "title": "ext4: regenerate buddy after block freeing failed if under fc replay",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26601",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}