{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53468", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-01T11:39:39.400Z", "datePublished": "2025-10-01T11:42:38.673Z", "dateUpdated": "2026-05-11T19:45:35.279Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:45:35.279Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memory leak in alloc_wbufs()\n\nkmemleak reported a sequence of memory leaks, and show them as following:\n\n unreferenced object 0xffff8881575f8400 (size 1024):\n comm \"mount\", pid 19625, jiffies 4297119604 (age 20.383s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [] __kmalloc+0x4d/0x150\n [] ubifs_mount+0x307b/0x7170 [ubifs]\n [] legacy_get_tree+0xed/0x1d0\n [] vfs_get_tree+0x7d/0x230\n [] path_mount+0xdd4/0x17b0\n [] __x64_sys_mount+0x1fa/0x270\n [] do_syscall_64+0x35/0x80\n [] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\n unreferenced object 0xffff8881798a6e00 (size 512):\n comm \"mount\", pid 19677, jiffies 4297121912 (age 37.816s)\n hex dump (first 32 bytes):\n 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk\n 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk\n backtrace:\n [] __kmalloc+0x4d/0x150\n [] ubifs_wbuf_init+0x52/0x480 [ubifs]\n [] ubifs_mount+0x31f5/0x7170 [ubifs]\n [] legacy_get_tree+0xed/0x1d0\n [] vfs_get_tree+0x7d/0x230\n [] path_mount+0xdd4/0x17b0\n [] __x64_sys_mount+0x1fa/0x270\n [] do_syscall_64+0x35/0x80\n [] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe problem is that the ubifs_wbuf_init() returns an error in the\nloop which in the alloc_wbufs(), then the wbuf->buf and wbuf->inodes\nthat were successfully alloced before are not freed.\n\nFix it by adding error hanging path in alloc_wbufs() which frees\nthe memory alloced before when ubifs_wbuf_init() returns an error." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ubifs/super.c" ], "versions": [ { "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d", "lessThan": "1f206002c6bc302bface871ef3f72c0bbcaa931c", "status": "affected", "versionType": "git" }, { "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d", "lessThan": "bf50229494f0443b3f08427d7df63e5a7e2a796a", "status": "affected", "versionType": "git" }, { "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d", "lessThan": "3e29634eb56e6547272fe4e568f63421f8b3b9fa", "status": "affected", "versionType": "git" }, { "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d", "lessThan": "26ec45f1c504e15268383019df139d7983f1e67f", "status": "affected", "versionType": "git" }, { "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d", "lessThan": "e11f36d3bc4d23f620754a948fe7b82b63dcb185", "status": "affected", "versionType": "git" }, { "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d", "lessThan": "4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2", "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/ubifs/super.c" ], "versions": [ { "version": "2.6.27", "status": "affected" }, { "version": "0", "lessThan": "2.6.27", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.235", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.173", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.100", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.18", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.5", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "2.6.27", "versionEndExcluding": "5.4.235" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.10.173" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.15.100" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.1.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.2.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1f206002c6bc302bface871ef3f72c0bbcaa931c" }, { "url": "https://git.kernel.org/stable/c/bf50229494f0443b3f08427d7df63e5a7e2a796a" }, { "url": "https://git.kernel.org/stable/c/3e29634eb56e6547272fe4e568f63421f8b3b9fa" }, { "url": "https://git.kernel.org/stable/c/26ec45f1c504e15268383019df139d7983f1e67f" }, { "url": "https://git.kernel.org/stable/c/e11f36d3bc4d23f620754a948fe7b82b63dcb185" }, { "url": "https://git.kernel.org/stable/c/4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2" } ], "title": "ubifs: Fix memory leak in alloc_wbufs()", "x_generator": { "engine": "bippy-1.2.0" } } } }