| { |
| "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: aovid use-after-free in ext4_ext_insert_extent()\n\nAs Ojaswin mentioned in Link, in ext4_ext_insert_extent(), if the path is\nreallocated in ext4_ext_create_new_leaf(), we'll use the stale path and\ncause UAF. Below is a sample trace with dummy values:\n\next4_ext_insert_extent\n path = *ppath = 2000\n ext4_ext_create_new_leaf(ppath)\n ext4_find_extent(ppath)\n path = *ppath = 2000\n if (depth > path[0].p_maxdepth)\n kfree(path = 2000);\n *ppath = path = NULL;\n path = kcalloc() = 3000\n *ppath = 3000;\n return path;\n /* here path is still 2000, UAF! */\n eh = path[depth].p_hdr\n\n==================================================================\nBUG: KASAN: slab-use-after-free in ext4_ext_insert_extent+0x26d4/0x3330\nRead of size 8 at addr ffff8881027bf7d0 by task kworker/u36:1/179\nCPU: 3 UID: 0 PID: 179 Comm: kworker/u6:1 Not tainted 6.11.0-rc2-dirty #866\nCall Trace:\n <TASK>\n ext4_ext_insert_extent+0x26d4/0x3330\n ext4_ext_map_blocks+0xe22/0x2d40\n ext4_map_blocks+0x71e/0x1700\n ext4_do_writepages+0x1290/0x2800\n[...]\n\nAllocated by task 179:\n ext4_find_extent+0x81c/0x1f70\n ext4_ext_map_blocks+0x146/0x2d40\n ext4_map_blocks+0x71e/0x1700\n ext4_do_writepages+0x1290/0x2800\n ext4_writepages+0x26d/0x4e0\n do_writepages+0x175/0x700\n[...]\n\nFreed by task 179:\n kfree+0xcb/0x240\n ext4_find_extent+0x7c0/0x1f70\n ext4_ext_insert_extent+0xa26/0x3330\n ext4_ext_map_blocks+0xe22/0x2d40\n ext4_map_blocks+0x71e/0x1700\n ext4_do_writepages+0x1290/0x2800\n ext4_writepages+0x26d/0x4e0\n do_writepages+0x175/0x700\n[...]\n==================================================================\n\nSo use *ppath to update the path to avoid the above problem." |
| } |
| ], |
| "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" |
| ], |
| "versions": [ |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "e17ebe4fdd7665c93ae9459ba40fcdfb76769ac1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "975ca06f3fd154c5f7742083e7b2574c57d1c0c3", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "5e811066c5ab709b070659197dccfb80ab650ddd", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "9df59009dfc6d9fc1bd9ddf6c5ab6e56d6ed887a", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "51db04892a993cace63415be99848970a0f15ef2", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "8162ee5d94b8c0351be0a9321be134872a7654a1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "beb7b66fb489041c50c6473100b383f7a51648fc", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "bfed082ce4b1ce6349b05c09a0fa4f3da35ecb1b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "10809df84a4d868db61af621bae3658494165279", |
| "lessThan": "a164f3a432aae62ca23d03e6d926b122ee5b860d", |
| "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" |
| ], |
| "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": "5.4.285", |
| "lessThanOrEqual": "5.4.*", |
| "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": "5.4.285" |
| }, |
| { |
| "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" |
| }, |
| { |
| "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, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.18", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/e17ebe4fdd7665c93ae9459ba40fcdfb76769ac1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/975ca06f3fd154c5f7742083e7b2574c57d1c0c3" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/5e811066c5ab709b070659197dccfb80ab650ddd" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/9df59009dfc6d9fc1bd9ddf6c5ab6e56d6ed887a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/51db04892a993cace63415be99848970a0f15ef2" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8162ee5d94b8c0351be0a9321be134872a7654a1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/beb7b66fb489041c50c6473100b383f7a51648fc" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/bfed082ce4b1ce6349b05c09a0fa4f3da35ecb1b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a164f3a432aae62ca23d03e6d926b122ee5b860d" |
| } |
| ], |
| "title": "ext4: aovid use-after-free in ext4_ext_insert_extent()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-49883", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
