CVE-2023-53616

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-04. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount

syzbot found an invalid-free in diUnmount:

BUG: KASAN: double-free in slab_free mm/slub.c:3661 [inline] BUG: KASAN: double-free in __kmem_cache_free+0x71/0x110 mm/slub.c:3674 Free of addr ffff88806f410000 by task syz-executor131/3632

CPU: 0 PID: 3632 Comm: syz-executor131 Not tainted 6.1.0-rc7-syzkaller-00012-gca57f02295f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report_invalid_free+0xac/0xd0 mm/kasan/report.c:460 ____kasan_slab_free+0xfb/0x120 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x71/0x110 mm/slub.c:3674 diUnmount+0xef/0x100 fs/jfs/jfs_imap.c:195 jfs_umount+0x108/0x370 fs/jfs/jfs_umount.c:63 jfs_put_super+0x86/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x310 fs/super.c:492 kill_block_super+0x79/0xd0 fs/super.c:1428 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x494/0x520 fs/namespace.c:1186 task_work_run+0x243/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x664/0x2070 kernel/exit.c:820 do_group_exit+0x1fd/0x2b0 kernel/exit.c:950 __do_sys_exit_group kernel/exit.c:961 [inline] __se_sys_exit_group kernel/exit.c:959 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:959 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd [...]

JFS_IP(ipimap)->i_imap is not setting to NULL after free in diUnmount. If jfs_remount() free JFS_IP(ipimap)->i_imap but then failed at diMount(). JFS_IP(ipimap)->i_imap will be freed once again. Fix this problem by setting JFS_IP(ipimap)->i_imap to NULL after free.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

October 4, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e2bda2c192d0244b5a78b787ef20aa10cb319b7
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/88484bde6f12126616b38e43b6c00edcd941f615
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4de3a603010e0ca334487de24c6aab0777b7f808
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ef7311101ca43dd73b45bca7a30ac72d9535ff87
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/756747d4b439e3e1159282ae89f17eefebbe9b25
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5873df0195124be2f357de11bfd473ead4f90ed8
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/114ea3cb13ab25f7178cb60283adb93d2f96dad7
generic

jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c3c0f0ddd851b3fa3e9d3450bbcd561f4f850469

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.14.326—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (34 versions)5.10.197-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-1 ... 6.1.55-1~bpo11+1 (10 versions)6.1.55-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.5.6-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.5.6-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 148 total refreshes for this CVE.

  1. 2026-09-18 19:26 UTCEPSS rescore
  2. 2026-09-16 14:06 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
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  11. 2026-09-07 06:47 UTCOSV refresh
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  1. 2026-08-23 00:17 UTCEPSS rescore
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  4. 2026-08-20 16:01 UTCOSV refresh
  5. 2026-08-19 17:02 UTCEPSS rescore
  6. 2026-08-18 13:46 UTCEPSS rescore
  7. 2026-08-16 14:54 UTCEPSS rescore
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  20. 2026-08-05 10:17 UTCEG score recompute
  21. 2026-08-05 10:16 UTCGHSA enrichment
  22. 2026-08-04 10:56 UTCGHSA enrichment
  23. 2026-08-04 09:29 UTCEG score recompute
  24. 2026-08-04 09:29 UTCGHSA enrichment
  25. 2026-08-03 10:34 UTCEPSS rescore
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  34. 2026-07-23 18:11 UTCOSV refresh
  35. 2026-07-23 14:16 UTCEPSS rescore
  36. 2026-07-23 02:29 UTCEG score recompute
  37. 2026-07-22 23:16 UTCEG score recompute
  38. 2026-07-22 14:07 UTCEPSS rescore
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  50. 2026-07-13 22:28 UTCEPSS rescore
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  62. 2026-07-06 13:01 UTCOSV refresh
  63. 2026-07-06 02:22 UTCEPSS rescore
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  75. 2026-06-25 13:48 UTCEPSS rescore

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2023-53616?
CVE-2023-53616 is a high vulnerability published on October 4, 2025. In the Linux kernel, the following vulnerability has been resolved: jfs: fix invalid free of JFSIP(ipimap)->iimap in diUnmount syzbot found an invalid-free in diUnmount: BUG: KASAN: double-free in slab_free mm/slub.c:3661 [inline] BUG: KASAN: double-free in kmemcachefree+0x71/0x110 mm/slub.c:3674…
When was CVE-2023-53616 disclosed?
CVE-2023-53616 was first published in the National Vulnerability Database on October 4, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53616 actively exploited?
CVE-2023-53616 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.2% of all scored CVEs.
What is the CVSS score of CVE-2023-53616?
CVE-2023-53616 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53616?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53616, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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