CVE-2023-53468

{"id": "CVE-2023-53468", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-10-01T12:15:48.830", "references": [{"url": "https://git.kernel.org/stable/c/1f206002c6bc302bface871ef3f72c0bbcaa931c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/26ec45f1c504e15268383019df139d7983f1e67f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3e29634eb56e6547272fe4e568f63421f8b3b9fa", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bf50229494f0443b3f08427d7df63e5a7e2a796a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e11f36d3bc4d23f620754a948fe7b82b63dcb185", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "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 [<ffffffff8176cecd>] __kmalloc+0x4d/0x150\n [<ffffffffa0406b2b>] ubifs_mount+0x307b/0x7170 [ubifs]\n [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0\n [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230\n [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0\n [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270\n [<ffffffff83c14295>] do_syscall_64+0x35/0x80\n [<ffffffff83e0006a>] 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 [<ffffffff8176cecd>] __kmalloc+0x4d/0x150\n [<ffffffffa0418342>] ubifs_wbuf_init+0x52/0x480 [ubifs]\n [<ffffffffa0406ca5>] ubifs_mount+0x31f5/0x7170 [ubifs]\n [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0\n [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230\n [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0\n [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270\n [<ffffffff83c14295>] do_syscall_64+0x35/0x80\n [<ffffffff83e0006a>] 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."}], "lastModified": "2026-01-20T15:52:36.877", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4BE762D6-5ED1-42B3-9E57-0ED017DD275F", "versionEndExcluding": "5.4.235", "versionStartIncluding": "2.6.27"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4D810CFB-B7C5-493C-B98A-0D5F0D8A47B6", "versionEndExcluding": "5.10.173", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6D7E5BB5-018B-46B7-A2C4-1ADB75099822", "versionEndExcluding": "5.15.100", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C8D24FD5-5A98-4042-9419-39DCFCBEFFF5", "versionEndExcluding": "6.1.18", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0575B33B-A320-4E51-84CA-10C937341E02", "versionEndExcluding": "6.2.5", "versionStartIncluding": "6.2"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}