{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53401", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:54:09.738Z", "datePublished": "2025-09-18T13:33:41.076Z", "dateUpdated": "2026-05-11T19:44:15.674Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:44:15.674Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()\n\nKCSAN found an issue in obj_stock_flush_required():\nstock->cached_objcg can be reset between the check and dereference:\n\n==================================================================\nBUG: KCSAN: data-race in drain_all_stock / drain_obj_stock\n\nwrite to 0xffff888237c2a2f8 of 8 bytes by task 19625 on cpu 0:\n drain_obj_stock+0x408/0x4e0 mm/memcontrol.c:3306\n refill_obj_stock+0x9c/0x1e0 mm/memcontrol.c:3340\n obj_cgroup_uncharge+0xe/0x10 mm/memcontrol.c:3408\n memcg_slab_free_hook mm/slab.h:587 [inline]\n __cache_free mm/slab.c:3373 [inline]\n __do_kmem_cache_free mm/slab.c:3577 [inline]\n kmem_cache_free+0x105/0x280 mm/slab.c:3602\n __d_free fs/dcache.c:298 [inline]\n dentry_free fs/dcache.c:375 [inline]\n __dentry_kill+0x422/0x4a0 fs/dcache.c:621\n dentry_kill+0x8d/0x1e0\n dput+0x118/0x1f0 fs/dcache.c:913\n __fput+0x3bf/0x570 fs/file_table.c:329\n ____fput+0x15/0x20 fs/file_table.c:349\n task_work_run+0x123/0x160 kernel/task_work.c:179\n resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]\n exit_to_user_mode_loop+0xcf/0xe0 kernel/entry/common.c:171\n exit_to_user_mode_prepare+0x6a/0xa0 kernel/entry/common.c:203\n __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]\n syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:296\n do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nread to 0xffff888237c2a2f8 of 8 bytes by task 19632 on cpu 1:\n obj_stock_flush_required mm/memcontrol.c:3319 [inline]\n drain_all_stock+0x174/0x2a0 mm/memcontrol.c:2361\n try_charge_memcg+0x6d0/0xd10 mm/memcontrol.c:2703\n try_charge mm/memcontrol.c:2837 [inline]\n mem_cgroup_charge_skmem+0x51/0x140 mm/memcontrol.c:7290\n sock_reserve_memory+0xb1/0x390 net/core/sock.c:1025\n sk_setsockopt+0x800/0x1e70 net/core/sock.c:1525\n udp_lib_setsockopt+0x99/0x6c0 net/ipv4/udp.c:2692\n udp_setsockopt+0x73/0xa0 net/ipv4/udp.c:2817\n sock_common_setsockopt+0x61/0x70 net/core/sock.c:3668\n __sys_setsockopt+0x1c3/0x230 net/socket.c:2271\n __do_sys_setsockopt net/socket.c:2282 [inline]\n __se_sys_setsockopt net/socket.c:2279 [inline]\n __x64_sys_setsockopt+0x66/0x80 net/socket.c:2279\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0xffff8881382d52c0 -> 0xffff888138893740\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 19632 Comm: syz-executor.0 Not tainted 6.3.0-rc2-syzkaller-00387-g534293368afa #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023\n\nFix it by using READ_ONCE()/WRITE_ONCE() for all accesses to\nstock->cached_objcg." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "mm/memcontrol.c" ], "versions": [ { "version": "bf4f059954dcb221384b2f784677e19a13cd4bdb", "lessThan": "33d9490b27e5d8da4444aefd714a4f50189db978", "status": "affected", "versionType": "git" }, { "version": "bf4f059954dcb221384b2f784677e19a13cd4bdb", "lessThan": "33391c7e1a2ad612bf3922cc168cb09a46bbe236", "status": "affected", "versionType": "git" }, { "version": "bf4f059954dcb221384b2f784677e19a13cd4bdb", "lessThan": "3b8abb3239530c423c0b97e42af7f7e856e1ee96", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "mm/memcontrol.c" ], "versions": [ { "version": "5.9", "status": "affected" }, { "version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.45", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.10", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "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": "5.9", "versionEndExcluding": "6.1.45" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.4.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/33d9490b27e5d8da4444aefd714a4f50189db978" }, { "url": "https://git.kernel.org/stable/c/33391c7e1a2ad612bf3922cc168cb09a46bbe236" }, { "url": "https://git.kernel.org/stable/c/3b8abb3239530c423c0b97e42af7f7e856e1ee96" } ], "title": "mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53401", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:01:39.705657Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:03:06.936Z" } } ] } }