| { |
| "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: update orig_path in ext4_find_extent()\n\nIn ext4_find_extent(), if the path is not big enough, we free it and set\n*orig_path to NULL. But after reallocating and successfully initializing\nthe path, we don't update *orig_path, in which case the caller gets a\nvalid path but a NULL ppath, and this may cause a NULL pointer dereference\nor a path memory leak. For example:\n\next4_split_extent\n path = *ppath = 2000\n ext4_find_extent\n if (depth > path[0].p_maxdepth)\n kfree(path = 2000);\n *orig_path = path = NULL;\n path = kcalloc() = 3000\n ext4_split_extent_at(*ppath = NULL)\n path = *ppath;\n ex = path[depth].p_ext;\n // NULL pointer dereference!\n\n==================================================================\nBUG: kernel NULL pointer dereference, address: 0000000000000010\nCPU: 6 UID: 0 PID: 576 Comm: fsstress Not tainted 6.11.0-rc2-dirty #847\nRIP: 0010:ext4_split_extent_at+0x6d/0x560\nCall Trace:\n <TASK>\n ext4_split_extent.isra.0+0xcb/0x1b0\n ext4_ext_convert_to_initialized+0x168/0x6c0\n ext4_ext_handle_unwritten_extents+0x325/0x4d0\n ext4_ext_map_blocks+0x520/0xdb0\n ext4_map_blocks+0x2b0/0x690\n ext4_iomap_begin+0x20e/0x2c0\n[...]\n==================================================================\n\nTherefore, *orig_path is updated when the extent lookup succeeds, so that\nthe caller can safely use path or *ppath." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/ext4/extents.c", |
| "fs/ext4/move_extent.c" |
| ], |
| "versions": [ |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "ec0c0beb9b777cdd1edd7df9b36e0f3e67e2bdff", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "6766937d0327000ac1b87c97bbecdd28b0dd6599", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "a9fcb1717d75061d3653ed69365c8d45331815cd", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "6801ed1298204d16a38571091e31178bfdc3c679", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "f55ecc58d07a6c1f6d6d5b5af125c25f8da0bda2", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "b63481b3a388ee2df9e295f97273226140422a42", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "11b230100d6801c014fab2afabc8bdea304c1b96", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "5b4b2dcace35f618fe361a87bae6f0d13af31bc1", |
| "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/extents.c", |
| "fs/ext4/move_extent.c" |
| ], |
| "versions": [ |
| { |
| "version": "3.18", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.18", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.323", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.227", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.168", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.113", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.55", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.10.14", |
| "lessThanOrEqual": "6.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.3", |
| "lessThanOrEqual": "6.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "4.19.323" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "5.10.227" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "5.15.168" |
| }, |
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| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.1.113" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.6.55" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.10.14" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.11.3" |
| }, |
| { |
| "vulnerable": true, |
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| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/ec0c0beb9b777cdd1edd7df9b36e0f3e67e2bdff" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6766937d0327000ac1b87c97bbecdd28b0dd6599" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a9fcb1717d75061d3653ed69365c8d45331815cd" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6801ed1298204d16a38571091e31178bfdc3c679" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f55ecc58d07a6c1f6d6d5b5af125c25f8da0bda2" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b63481b3a388ee2df9e295f97273226140422a42" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/11b230100d6801c014fab2afabc8bdea304c1b96" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/5b4b2dcace35f618fe361a87bae6f0d13af31bc1" |
| } |
| ], |
| "title": "ext4: update orig_path in ext4_find_extent()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-49881", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
