CVE-2023-53401 (GCVE-0-2023-53401)
Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-05-11 19:44
VLAI
EPSS
VEX
Title
mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()
KCSAN found an issue in obj_stock_flush_required():
stock->cached_objcg can be reset between the check and dereference:
==================================================================
BUG: KCSAN: data-race in drain_all_stock / drain_obj_stock
write to 0xffff888237c2a2f8 of 8 bytes by task 19625 on cpu 0:
drain_obj_stock+0x408/0x4e0 mm/memcontrol.c:3306
refill_obj_stock+0x9c/0x1e0 mm/memcontrol.c:3340
obj_cgroup_uncharge+0xe/0x10 mm/memcontrol.c:3408
memcg_slab_free_hook mm/slab.h:587 [inline]
__cache_free mm/slab.c:3373 [inline]
__do_kmem_cache_free mm/slab.c:3577 [inline]
kmem_cache_free+0x105/0x280 mm/slab.c:3602
__d_free fs/dcache.c:298 [inline]
dentry_free fs/dcache.c:375 [inline]
__dentry_kill+0x422/0x4a0 fs/dcache.c:621
dentry_kill+0x8d/0x1e0
dput+0x118/0x1f0 fs/dcache.c:913
__fput+0x3bf/0x570 fs/file_table.c:329
____fput+0x15/0x20 fs/file_table.c:349
task_work_run+0x123/0x160 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xcf/0xe0 kernel/entry/common.c:171
exit_to_user_mode_prepare+0x6a/0xa0 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read to 0xffff888237c2a2f8 of 8 bytes by task 19632 on cpu 1:
obj_stock_flush_required mm/memcontrol.c:3319 [inline]
drain_all_stock+0x174/0x2a0 mm/memcontrol.c:2361
try_charge_memcg+0x6d0/0xd10 mm/memcontrol.c:2703
try_charge mm/memcontrol.c:2837 [inline]
mem_cgroup_charge_skmem+0x51/0x140 mm/memcontrol.c:7290
sock_reserve_memory+0xb1/0x390 net/core/sock.c:1025
sk_setsockopt+0x800/0x1e70 net/core/sock.c:1525
udp_lib_setsockopt+0x99/0x6c0 net/ipv4/udp.c:2692
udp_setsockopt+0x73/0xa0 net/ipv4/udp.c:2817
sock_common_setsockopt+0x61/0x70 net/core/sock.c:3668
__sys_setsockopt+0x1c3/0x230 net/socket.c:2271
__do_sys_setsockopt net/socket.c:2282 [inline]
__se_sys_setsockopt net/socket.c:2279 [inline]
__x64_sys_setsockopt+0x66/0x80 net/socket.c:2279
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0xffff8881382d52c0 -> 0xffff888138893740
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19632 Comm: syz-executor.0 Not tainted 6.3.0-rc2-syzkaller-00387-g534293368afa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Fix it by using READ_ONCE()/WRITE_ONCE() for all accesses to
stock->cached_objcg.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 19:01 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
bf4f059954dcb221384b2f784677e19a13cd4bdb , < 33d9490b27e5d8da4444aefd714a4f50189db978
(git)
Affected: bf4f059954dcb221384b2f784677e19a13cd4bdb , < 33391c7e1a2ad612bf3922cc168cb09a46bbe236 (git) Affected: bf4f059954dcb221384b2f784677e19a13cd4bdb , < 3b8abb3239530c423c0b97e42af7f7e856e1ee96 (git) |
guessed | |
| Linux | Linux |
Affected:
5.9
Unaffected: 0 , < 5.9 (semver) Unaffected: 6.1.45 , ≤ 6.1.* (semver) Unaffected: 6.4.10 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix) |
guessed |
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"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-\u003ecached_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 -\u003e 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-\u003ecached_objcg."
}
],
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"url": "https://git.kernel.org/stable/c/33d9490b27e5d8da4444aefd714a4f50189db978"
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"title": "mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()",
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"cveId": "CVE-2023-53401",
"datePublished": "2025-09-18T13:33:41.076Z",
"dateReserved": "2025-09-17T14:54:09.738Z",
"dateUpdated": "2026-05-11T19:44:15.674Z",
"state": "PUBLISHED"
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-53401",
"date": "2026-09-15",
"epss": "0.00135",
"percentile": "0.03306"
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"microsoft_vex": {
"current_release_date": "2026-08-23T14:59:00.000Z",
"cve": "CVE-2023-53401",
"id": "msrc_CVE-2023-53401",
"initial_release_date": "2025-12-13T01:01:40.000Z",
"product_status:known_affected": "4",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2023-53401.json",
"version": "4"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2023-53401\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-18T14:15:43.417\",\"lastModified\":\"2026-06-17T06:45:13.540\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"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-\u003ecached_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 -\u003e 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-\u003ecached_objcg.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"mm/memcontrol.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"bf4f059954dcb221384b2f784677e19a13cd4bdb\",\"lessThan\":\"33d9490b27e5d8da4444aefd714a4f50189db978\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bf4f059954dcb221384b2f784677e19a13cd4bdb\",\"lessThan\":\"33391c7e1a2ad612bf3922cc168cb09a46bbe236\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bf4f059954dcb221384b2f784677e19a13cd4bdb\",\"lessThan\":\"3b8abb3239530c423c0b97e42af7f7e856e1ee96\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"mm/memcontrol.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.45\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4.10\",\"lessThanOrEqual\":\"6.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T19:01:39.705657Z\",\"id\":\"CVE-2023-53401\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.9\",\"versionEndExcluding\":\"6.1.45\",\"matchCriteriaId\":\"2E20CFC4-A304-4343-B44A-A9C786DFCEE0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.4.10\",\"matchCriteriaId\":\"7BB0D94C-4FCE-46F4-A8D4-062D6A84627A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/33391c7e1a2ad612bf3922cc168cb09a46bbe236\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/33d9490b27e5d8da4444aefd714a4f50189db978\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3b8abb3239530c423c0b97e42af7f7e856e1ee96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-29T22:22:40+00:00",
"cve": "CVE-2023-53401",
"id": "CVE-2023-53401",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:fixed": "1342",
"product_status:known_affected": "36",
"product_status:known_not_affected": "112",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53401.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T16:47:09Z",
"cve": "CVE-2023-53401",
"id": "CVE-2023-53401",
"initial_release_date": "2025-09-18T23:38:08Z",
"product_status:known_affected": "455",
"product_status:known_not_affected": "332",
"product_status:recommended": "330",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-53401",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53401.json",
"version": "48"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"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\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T19:01:35.513Z\"}}], \"cna\": {\"title\": \"mm: kmem: fix a NULL pointer dereference in obj_stock_flush_required()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"bf4f059954dcb221384b2f784677e19a13cd4bdb\", \"lessThan\": \"33d9490b27e5d8da4444aefd714a4f50189db978\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bf4f059954dcb221384b2f784677e19a13cd4bdb\", \"lessThan\": \"33391c7e1a2ad612bf3922cc168cb09a46bbe236\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bf4f059954dcb221384b2f784677e19a13cd4bdb\", \"lessThan\": \"3b8abb3239530c423c0b97e42af7f7e856e1ee96\", \"versionType\": \"git\"}], \"programFiles\": [\"mm/memcontrol.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.9\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.9\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.45\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.4.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.4.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"mm/memcontrol.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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-\u003ecached_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 -\u003e 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-\u003ecached_objcg.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.45\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4.10\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5\", \"versionStartIncluding\": \"5.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:44:15.674Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-53401\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:44:15.674Z\", \"dateReserved\": \"2025-09-17T14:54:09.738Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-18T13:33:41.076Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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