CVE-2025-38051

HIGHNVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2025-06-18. NVD baseline CVSS 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

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

smb: client: Fix use-after-free in cifs_fill_dirent

There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning.

================================================================== BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs] Read of size 4 at addr ffff8880099b819c by task a.out/342975

CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: dump_stack_lvl+0x53/0x70 print_report+0xce/0x640 kasan_report+0xb8/0xf0 cifs_fill_dirent+0xb03/0xb60 [cifs] cifs_readdir+0x12cb/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f996f64b9f9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0d f7 c3 0c 00 f7 d8 64 89 8 RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88 R13: 0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000

Allocated by task 408: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x6e/0x70 kmem_cache_alloc_noprof+0x117/0x3d0 mempool_alloc_noprof+0xf2/0x2c0 cifs_buf_get+0x36/0x80 [cifs] allocate_buffers+0x1d2/0x330 [cifs] cifs_demultiplex_thread+0x22b/0x2690 [cifs] kthread+0x394/0x720 ret_from_fork+0x34/0x70 ret_from_fork_asm+0x1a/0x30

Freed by task 342979: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x37/0x50 kmem_cache_free+0x2b8/0x500 cifs_buf_release+0x3c/0x70 [cifs] cifs_readdir+0x1c97/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents64+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e

The buggy address belongs to the object at ffff8880099b8000 which belongs to the cache cifs_request of size 16588 The buggy address is located 412 bytes inside of freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc)

The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x80000000000040(head|node=0|zone=1) page_type: f5(slab) raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected

Memory state around the buggy address: ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880099b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880099b8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================

POC is available in the link [1].

The problem triggering process is as follows:

Process 1 Process 2 ----------------------------------- ---truncated---

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

June 18, 2025

Last Modified

August 5, 2026

Advisory Details (10)

Auto-updated Aug 2, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 4328-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
generic Patch Available

[SECURITY] [DLA 4327-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c8623231e0edfcccb7cc6add0288fa0f0594282f
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aee067e88d61eb72e966f094e4749c6b14e7008f
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a7a8fe56e932a36f43e031b398aef92341bf5ea0
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a24c2f05ac3c5b0aaa539d9d913826d2643dfd0e
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9c9aafbacc183598f064902365e107b5e856531f
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9bea368648ac46f8593a780760362e40291d22a9
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/73cadde98f67f76c5eba00ac0b72c453383cec8b
generic

smb: client: Fix use-after-free in cifs_fill_dirent - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1b197931fbc821bc7e9e91bf619400db563e3338

Vendor Advisories for CVE-2025-38051(13)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-05-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-32.32~24.04.1) @ noble2026-05-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-05-30ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-05-30ubuntu
ubuntulinux-tools-raspi-6.14 (6.14.0-1014.14) @ plucky2026-05-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-05-30ubuntu
ubuntulinux-tools-oracle-edge (6.14.0-1013.13~24.04.1) @ noble2026-05-30ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1043.44~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1043.48) @ noble2026-05-30ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-05-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-05-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-05-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1046.52) @ noble2026-05-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-05-30ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1044.44) @ noble2026-05-30ubuntu
redhatkernel-0:6.12.0-55.60.1.el10_02026-02-16redhat
redhatkernel-rt-0:5.14.0-284.156.1.rt14.441.el9_22026-02-11redhat
redhatkernel-0:5.14.0-284.156.1.el9_22026-02-11redhat
redhatkernel-0:5.14.0-570.86.1.el9_62026-02-09redhat
redhatkernel-0:5.14.0-427.109.1.el9_42026-02-04redhat
redhatkernel-rt-0:5.14.0-70.163.1.rt21.235.el9_02026-01-28redhat
redhatkernel-0:4.18.0-477.126.1.el8_82026-01-28redhat
redhatkernel-0:5.14.0-70.163.1.el9_02026-01-28redhat
redhatkernel-0:4.18.0-553.94.1.el8_102026-01-19redhat
redhatkernel-rt-0:4.18.0-553.94.1.rt7.435.el8_102026-01-19redhat
redhatkernel-0:4.18.0-193.181.1.el8_22026-01-15redhat
redhatkernel-0:4.18.0-305.183.1.el8_42026-01-14redhat
redhatkernel-0:4.18.0-372.175.1.el8_62026-01-14redhat
linuxKernel @ 5.4.294—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.

Weakness Classification(1)

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

Additional Vendor Advisories

(12)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 46× 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 113 total refreshes for this CVE.

  1. 2026-08-07 16:26 UTCEPSS rescore
  2. 2026-08-06 13:46 UTCEPSS rescore
  3. 2026-08-05 13:55 UTCEG score recompute
  4. 2026-08-05 13:55 UTCVendor advisory
  5. 2026-08-05 13:55 UTCGHSA enrichment
  6. 2026-08-04 15:09 UTCEPSS rescore
  7. 2026-08-04 10:37 UTCEPSS rescore
  8. 2026-08-03 10:35 UTCEPSS rescore
  9. 2026-08-02 02:26 UTCEPSS rescore
  10. 2026-08-01 04:15 UTCEPSS rescore
  11. 2026-07-30 16:27 UTCEPSS rescore
  12. 2026-07-30 07:09 UTCEG score recompute
  13. 2026-07-30 07:09 UTCVendor advisory
  14. 2026-07-30 07:09 UTCGHSA enrichment
  15. 2026-07-30 06:24 UTCNVD updateCVSS v3 → 7 · severity → HIGH
  16. 2026-07-30 01:29 UTCEPSS rescore
  17. 2026-07-28 15:35 UTCEPSS rescore
  18. 2026-07-26 14:54 UTCEPSS rescore
  19. 2026-07-25 14:17 UTCEPSS rescore
  20. 2026-07-25 14:17 UTCEPSS rescore
  21. 2026-07-24 14:17 UTCEPSS rescore
  22. 2026-07-24 03:11 UTCOSV refresh
  23. 2026-07-23 02:54 UTCEG score recompute
  24. 2026-07-22 14:07 UTCEPSS rescore
  25. 2026-07-22 14:07 UTCEPSS rescore
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  1. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-20 17:07 UTCEPSS rescore
  3. 2026-07-19 14:30 UTCEPSS rescore
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  5. 2026-07-19 02:28 UTCEPSS rescore
  6. 2026-07-19 02:28 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-16 17:02 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-15 16:57 UTCEPSS rescore
  12. 2026-07-15 01:59 UTCEPSS rescore
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  14. 2026-07-13 22:29 UTCEPSS rescore
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  16. 2026-07-13 06:12 UTCEPSS rescore
  17. 2026-07-12 05:46 UTCEPSS rescore
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-11 08:27 UTCEPSS rescore
  20. 2026-07-09 19:09 UTCEPSS rescore
  21. 2026-07-09 19:09 UTCEPSS rescore
  22. 2026-07-07 13:45 UTCEPSS rescore
  23. 2026-07-06 22:45 UTCOSV refresh
  24. 2026-07-06 16:27 UTCEPSS rescore
  25. 2026-07-06 16:27 UTCEPSS rescore
  26. 2026-07-06 02:23 UTCEPSS rescore
  27. 2026-07-05 02:30 UTCEPSS rescore
  28. 2026-07-04 06:30 UTCEPSS rescore
  29. 2026-07-01 15:06 UTCEPSS rescore
  30. 2026-07-01 15:06 UTCEPSS rescore
  31. 2026-06-30 23:22 UTCEPSS rescore
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  33. 2026-06-29 14:06 UTCEPSS rescore
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  35. 2026-06-28 14:07 UTCEPSS rescore
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  37. 2026-06-28 04:55 UTCEPSS rescore
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  39. 2026-06-27 03:08 UTCEPSS rescore
  40. 2026-06-27 03:08 UTCEPSS rescore
  41. 2026-06-25 13:49 UTCEPSS rescore
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  43. 2026-06-24 14:04 UTCEPSS rescore
  44. 2026-06-24 14:04 UTCEPSS rescore
  45. 2026-06-23 21:32 UTCEPSS rescore
  46. 2026-06-23 21:32 UTCEPSS rescore
  47. 2026-06-22 14:25 UTCEPSS rescore
  48. 2026-06-22 14:25 UTCEPSS rescore
  49. 2026-06-21 14:56 UTCEPSS rescore
  50. 2026-06-21 14:56 UTCEPSS rescore
  51. 2026-06-21 01:59 UTCEPSS rescore
  52. 2026-06-21 01:59 UTCEPSS rescore
  53. 2026-06-19 19:25 UTCEPSS rescore
  54. 2026-06-19 19:25 UTCEPSS rescore
  55. 2026-06-18 17:52 UTCEPSS rescore
  56. 2026-06-18 17:52 UTCEPSS rescore
  57. 2026-06-18 09:43 UTCOSV refresh
  58. 2026-06-17 17:52 UTCEPSS rescore
  59. 2026-06-16 17:52 UTCEPSS rescore
  60. 2026-06-16 17:52 UTCEPSS rescore
  61. 2026-06-14 23:18 UTCMITRE cvelistV5
  62. 2026-06-14 23:17 UTCEPSS rescore
  63. 2026-06-13 23:00 UTCEPSS rescore
  64. 2026-06-12 23:11 UTCEPSS rescore
  65. 2026-06-11 14:00 UTCEPSS rescore
  66. 2026-06-10 22:18 UTCEPSS rescore
  67. 2026-06-10 13:22 UTCEPSS rescore
  68. 2026-06-08 14:16 UTCEPSS rescore
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  70. 2026-06-07 15:24 UTCEPSS rescore
  71. 2026-06-06 13:47 UTCEPSS rescore
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  73. 2026-06-05 22:46 UTCEPSS rescore
  74. 2026-06-05 22:46 UTCEPSS rescore
  75. 2026-06-05 06:10 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-38051?
CVE-2025-38051 is a high vulnerability published on June 18, 2025. In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix use-after-free in cifsfilldirent There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning.…
When was CVE-2025-38051 disclosed?
CVE-2025-38051 was first published in the National Vulnerability Database on June 18, 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-2025-38051 actively exploited?
CVE-2025-38051 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 91.9% of all scored CVEs.
What is the CVSS score of CVE-2025-38051?
CVE-2025-38051 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2025-38051?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-38051, 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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