{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54069", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T12:21:05.093Z", "datePublished": "2025-12-24T12:23:13.504Z", "dateUpdated": "2026-05-23T15:32:21.855Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:32:21.855Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix BUG in ext4_mb_new_inode_pa() due to overflow\n\nWhen we calculate the end position of ext4_free_extent, this position may\nbe exactly where ext4_lblk_t (i.e. uint) overflows. For example, if\nac_g_ex.fe_logical is 4294965248 and ac_orig_goal_len is 2048, then the\ncomputed end is 0x100000000, which is 0. If ac->ac_o_ex.fe_logical is not\nthe first case of adjusting the best extent, that is, new_bex_end > 0, the\nfollowing BUG_ON will be triggered:\n\n=========================================================\nkernel BUG at fs/ext4/mballoc.c:5116!\ninvalid opcode: 0000 [#1] PREEMPT SMP PTI\nCPU: 3 PID: 673 Comm: xfs_io Tainted: G E 6.5.0-rc1+ #279\nRIP: 0010:ext4_mb_new_inode_pa+0xc5/0x430\nCall Trace:\n \n ext4_mb_use_best_found+0x203/0x2f0\n ext4_mb_try_best_found+0x163/0x240\n ext4_mb_regular_allocator+0x158/0x1550\n ext4_mb_new_blocks+0x86a/0xe10\n ext4_ext_map_blocks+0xb0c/0x13a0\n ext4_map_blocks+0x2cd/0x8f0\n ext4_iomap_begin+0x27b/0x400\n iomap_iter+0x222/0x3d0\n __iomap_dio_rw+0x243/0xcb0\n iomap_dio_rw+0x16/0x80\n=========================================================\n\nA simple reproducer demonstrating the problem:\n\n\tmkfs.ext4 -F /dev/sda -b 4096 100M\n\tmount /dev/sda /tmp/test\n\tfallocate -l1M /tmp/test/tmp\n\tfallocate -l10M /tmp/test/file\n\tfallocate -i -o 1M -l16777203M /tmp/test/file\n\tfsstress -d /tmp/test -l 0 -n 100000 -p 8 &\n\tsleep 10 && killall -9 fsstress\n\trm -f /tmp/test/tmp\n\txfs_io -c \"open -ad /tmp/test/file\" -c \"pwrite -S 0xff 0 8192\"\n\nWe simply refactor the logic for adjusting the best extent by adding\na temporary ext4_free_extent ex and use extent_logical_end() to avoid\noverflow, which also simplifies the code." } ], "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": "8659c5f4ffaacbe932849b98462c3d635b4eacea", "lessThan": "83ecffd40c65844a73c2e93d7c841455786605ac", "status": "affected", "versionType": "git" }, { "version": "fc7237e191b99f88e859316fab2b06c2c26c8344", "lessThan": "58fe961c606c446f5612f6897827b1cac42c2e89", "status": "affected", "versionType": "git" }, { "version": "613f6cde5ebb005a37fda117cdda7b4126170c13", "lessThan": "f2c3a3aa6f11ad9878dbc3a067b0633e07b586c1", "status": "affected", "versionType": "git" }, { "version": "9d4430b7f862ce8835ca4e054b6916d15c8e0862", "lessThan": "fcefddf3a151b2c416b20120c06bb1ba9ad676fb", "status": "affected", "versionType": "git" }, { "version": "93cdf49f6eca5e23f6546b8f28457b2e6a6961d9", "lessThan": "b7e9ec38b6a0beb5a49cd1e76be0a9a07c218e90", "status": "affected", "versionType": "git" }, { "version": "93cdf49f6eca5e23f6546b8f28457b2e6a6961d9", "lessThan": "bc056e7163ac7db945366de219745cf94f32a3e6", "status": "affected", "versionType": "git" }, { "version": "46772ab99409cc72241227dd8f5295f358233fda", "status": "affected", "versionType": "git" }, { "version": "25a60b4533268477920faaeebd99e7e69c0735cd", "status": "affected", "versionType": "git" }, { "version": "cec4ef62b36b04e0bc8905732adab091f4bc1cfd", "status": "affected", "versionType": "git" }, { "version": "5.4.244", "lessThan": "5.4.260", "status": "affected", "versionType": "semver" }, { "version": "5.10.181", "lessThan": "5.10.200", "status": "affected", "versionType": "semver" }, { "version": "5.15.113", "lessThan": "5.15.138", "status": "affected", "versionType": "semver" }, { "version": "6.1.30", "lessThan": "6.1.61", "status": "affected", "versionType": "semver" }, { "version": "4.14.316", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.19.284", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "6.3.4", "lessThan": "6.4", "status": "affected", "versionType": "semver" } ] }, { "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": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.260", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.200", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.138", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.61", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.5", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6", "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": "5.4.244", "versionEndExcluding": "5.4.260" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.181", "versionEndExcluding": "5.10.200" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.113", "versionEndExcluding": "5.15.138" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.30", "versionEndExcluding": "6.1.61" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.5.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.316" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.284" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/83ecffd40c65844a73c2e93d7c841455786605ac" }, { "url": "https://git.kernel.org/stable/c/58fe961c606c446f5612f6897827b1cac42c2e89" }, { "url": "https://git.kernel.org/stable/c/f2c3a3aa6f11ad9878dbc3a067b0633e07b586c1" }, { "url": "https://git.kernel.org/stable/c/fcefddf3a151b2c416b20120c06bb1ba9ad676fb" }, { "url": "https://git.kernel.org/stable/c/b7e9ec38b6a0beb5a49cd1e76be0a9a07c218e90" }, { "url": "https://git.kernel.org/stable/c/bc056e7163ac7db945366de219745cf94f32a3e6" } ], "title": "ext4: fix BUG in ext4_mb_new_inode_pa() due to overflow", "x_generator": { "engine": "bippy-1.2.0" } } } }