CVE-2025-37750

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-05-01. 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

A fix is available — apply it.

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

smb: client: fix UAF in decryption with multichannel

After commit f7025d861694 ("smb: client: allocate crypto only for primary server") and commit b0abcd65ec54 ("smb: client: fix UAF in async decryption"), the channels started reusing AEAD TFM from primary channel to perform synchronous decryption, but that can't done as there could be multiple cifsd threads (one per channel) simultaneously accessing it to perform decryption.

This fixes the following KASAN splat when running fstest generic/249 with 'vers=3.1.1,multichannel,max_channels=4,seal' against Windows Server 2022:

BUG: KASAN: slab-use-after-free in gf128mul_4k_lle+0xba/0x110 Read of size 8 at addr ffff8881046c18a0 by task cifsd/986 CPU: 3 UID: 0 PID: 986 Comm: cifsd Not tainted 6.15.0-rc1 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-3.fc41 04/01/2014 Call Trace: dump_stack_lvl+0x5d/0x80 print_report+0x156/0x528 ? gf128mul_4k_lle+0xba/0x110 ? __virt_addr_valid+0x145/0x300 ? __phys_addr+0x46/0x90 ? gf128mul_4k_lle+0xba/0x110 kasan_report+0xdf/0x1a0 ? gf128mul_4k_lle+0xba/0x110 gf128mul_4k_lle+0xba/0x110 ghash_update+0x189/0x210 shash_ahash_update+0x295/0x370 ? __pfx_shash_ahash_update+0x10/0x10 ? __pfx_shash_ahash_update+0x10/0x10 ? __pfx_extract_iter_to_sg+0x10/0x10 ? ___kmalloc_large_node+0x10e/0x180 ? __asan_memset+0x23/0x50 crypto_ahash_update+0x3c/0xc0 gcm_hash_assoc_remain_continue+0x93/0xc0 crypt_message+0xe09/0xec0 [cifs] ? __pfx_crypt_message+0x10/0x10 [cifs] ? _raw_spin_unlock+0x23/0x40 ? __pfx_cifs_readv_from_socket+0x10/0x10 [cifs] decrypt_raw_data+0x229/0x380 [cifs] ? __pfx_decrypt_raw_data+0x10/0x10 [cifs] ? __pfx_cifs_read_iter_from_socket+0x10/0x10 [cifs] smb3_receive_transform+0x837/0xc80 [cifs] ? __pfx_smb3_receive_transform+0x10/0x10 [cifs] ? __pfx___might_resched+0x10/0x10 ? __pfx_smb3_is_transform_hdr+0x10/0x10 [cifs] cifs_demultiplex_thread+0x692/0x1570 [cifs] ? __pfx_cifs_demultiplex_thread+0x10/0x10 [cifs] ? rcu_is_watching+0x20/0x50 ? rcu_lockdep_current_cpu_online+0x62/0xb0 ? find_held_lock+0x32/0x90 ? kvm_sched_clock_read+0x11/0x20 ? local_clock_noinstr+0xd/0xd0 ? trace_irq_enable.constprop.0+0xa8/0xe0 ? __pfx_cifs_demultiplex_thread+0x10/0x10 [cifs] kthread+0x1fe/0x380 ? kthread+0x10f/0x380 ? __pfx_kthread+0x10/0x10 ? local_clock_noinstr+0xd/0xd0 ? ret_from_fork+0x1b/0x60 ? local_clock+0x15/0x30 ? lock_release+0x29b/0x390 ? rcu_is_watching+0x20/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x31/0x60 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30

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
29%
KEV
Not listed

Published

May 1, 2025

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

smb: client: fix UAF in decryption with multichannel - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e859b216d94668bc66330e61be201234f4413d1a
generic

smb: client: fix UAF in decryption with multichannel - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa5a1e4b882964eb79d5b5d1d1e8a1a5efbb1d15
generic

smb: client: fix UAF in decryption with multichannel - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/950557922c1298464749c216d8763e97faf5d0a6
generic

smb: client: fix UAF in decryption with multichannel - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9502dd5c7029902f4a425bf959917a5a9e7c0e50

Vendor Advisories for CVE-2025-37750(3)

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

Patch Availability(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oracle-64k (6.14.0-1007.7) @ plucky2026-05-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-64.67~22.04.1) @ jammy2026-05-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1025.26) @ noble2026-05-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-64.67) @ noble2026-05-30ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1029.30) @ noble2026-05-30ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-64.67.1) @ noble2026-05-30ubuntu
ubuntulinux-tools-gcp-lts-24.04 (6.8.0-1033.35) @ noble2026-05-30ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2026.27) @ noble2026-05-30ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1031.35) @ noble2026-05-30ubuntu
ubuntulinux-tools-azure-nvidia-lts-24.04 (6.8.0-1022.23) @ noble2026-05-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-22.22) @ plucky2026-05-30ubuntu
ubuntulinux-tools-azure (6.14.0-1007.7) @ plucky2026-05-30ubuntu
redhatkpatch-patch2025-06-23redhat
redhatkernel-0:6.12.0-55.17.1.el10_02025-06-16redhat
redhatkernel-0:5.14.0-570.22.1.el9_62025-06-16redhat
linuxKernel @ 6.12.24—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (335 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.12.25-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.12.25-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(13)

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 6× in last 7d / 31× 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 129 total refreshes for this CVE.

  1. 2026-08-30 19:16 UTCEPSS rescore
  2. 2026-08-30 01:21 UTCEPSS rescore
  3. 2026-08-28 21:40 UTCEPSS rescore
  4. 2026-08-27 14:24 UTCEPSS rescore
  5. 2026-08-26 14:45 UTCEPSS rescore
  6. 2026-08-25 13:48 UTCEPSS rescore
  7. 2026-08-23 00:18 UTCEPSS rescore
  8. 2026-08-21 23:48 UTCEPSS rescore
  9. 2026-08-20 22:54 UTCEPSS rescore
  10. 2026-08-20 22:01 UTCOSV refresh
  11. 2026-08-19 17:03 UTCEPSS rescore
  12. 2026-08-19 17:03 UTCEPSS rescore
  13. 2026-08-18 13:47 UTCEPSS rescore
  14. 2026-08-17 13:46 UTCEPSS rescore
  15. 2026-08-16 14:55 UTCEPSS rescore
  16. 2026-08-16 02:13 UTCEPSS rescore
  17. 2026-08-15 01:29 UTCEPSS rescore
  18. 2026-08-13 21:59 UTCEPSS rescore
  19. 2026-08-12 13:50 UTCEPSS rescore
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-08 16:36 UTCEPSS rescore
  22. 2026-08-07 16:26 UTCEPSS rescore
  23. 2026-08-06 13:46 UTCEPSS rescore
  24. 2026-08-05 13:57 UTCEG score recompute
  25. 2026-08-05 13:57 UTCVendor advisory
Show 75 more
  1. 2026-08-05 13:57 UTCGHSA enrichment
  2. 2026-08-04 15:09 UTCEPSS rescore
  3. 2026-08-04 10:37 UTCEPSS rescore
  4. 2026-08-03 10:35 UTCEPSS rescore
  5. 2026-08-02 02:26 UTCEPSS rescore
  6. 2026-08-01 04:15 UTCEPSS rescore
  7. 2026-07-30 16:27 UTCEPSS rescore
  8. 2026-07-30 07:11 UTCEG score recompute
  9. 2026-07-30 07:11 UTCVendor advisory
  10. 2026-07-30 07:11 UTCGHSA enrichment
  11. 2026-07-30 01:29 UTCEPSS rescore
  12. 2026-07-28 15:35 UTCEPSS rescore
  13. 2026-07-26 14:54 UTCEPSS rescore
  14. 2026-07-25 14:17 UTCEPSS rescore
  15. 2026-07-25 14:17 UTCEPSS rescore
  16. 2026-07-24 14:17 UTCEPSS rescore
  17. 2026-07-24 07:41 UTCOSV refresh
  18. 2026-07-23 02:54 UTCEG score recompute
  19. 2026-07-22 14:07 UTCEPSS rescore
  20. 2026-07-22 14:07 UTCEPSS rescore
  21. 2026-07-21 15:24 UTCEPSS rescore
  22. 2026-07-20 17:07 UTCEPSS rescore
  23. 2026-07-19 14:30 UTCEPSS rescore
  24. 2026-07-19 14:30 UTCEPSS rescore
  25. 2026-07-16 17:02 UTCEPSS rescore
  26. 2026-07-15 16:57 UTCEPSS rescore
  27. 2026-07-15 16:57 UTCEPSS rescore
  28. 2026-07-15 01:59 UTCEPSS rescore
  29. 2026-07-15 01:59 UTCEPSS rescore
  30. 2026-07-13 22:29 UTCEPSS rescore
  31. 2026-07-13 22:29 UTCEPSS rescore
  32. 2026-07-13 06:12 UTCEPSS rescore
  33. 2026-07-12 05:46 UTCEPSS rescore
  34. 2026-07-11 08:27 UTCEPSS rescore
  35. 2026-07-11 08:27 UTCEPSS rescore
  36. 2026-07-09 19:09 UTCEPSS rescore
  37. 2026-07-09 19:09 UTCEPSS rescore
  38. 2026-07-07 13:45 UTCEPSS rescore
  39. 2026-07-07 03:21 UTCOSV refresh
  40. 2026-07-06 16:27 UTCEPSS rescore
  41. 2026-07-06 16:27 UTCEPSS rescore
  42. 2026-07-06 02:23 UTCEPSS rescore
  43. 2026-07-05 02:30 UTCEPSS rescore
  44. 2026-07-04 06:30 UTCEPSS rescore
  45. 2026-07-01 15:06 UTCEPSS rescore
  46. 2026-07-01 15:06 UTCEPSS rescore
  47. 2026-06-30 23:22 UTCEPSS rescore
  48. 2026-06-30 23:22 UTCEPSS rescore
  49. 2026-06-29 14:06 UTCEPSS rescore
  50. 2026-06-29 14:06 UTCEPSS rescore
  51. 2026-06-28 14:07 UTCEPSS rescore
  52. 2026-06-28 14:07 UTCEPSS rescore
  53. 2026-06-28 04:55 UTCEPSS rescore
  54. 2026-06-28 04:55 UTCEPSS rescore
  55. 2026-06-27 03:08 UTCEPSS rescore
  56. 2026-06-27 03:08 UTCEPSS rescore
  57. 2026-06-25 13:49 UTCEPSS rescore
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  59. 2026-06-24 14:04 UTCEPSS rescore
  60. 2026-06-24 14:04 UTCEPSS rescore
  61. 2026-06-23 21:32 UTCEPSS rescore
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  63. 2026-06-22 14:25 UTCEPSS rescore
  64. 2026-06-22 14:25 UTCEPSS rescore
  65. 2026-06-21 14:56 UTCEPSS rescore
  66. 2026-06-21 14:56 UTCEPSS rescore
  67. 2026-06-21 01:59 UTCEPSS rescore
  68. 2026-06-21 01:59 UTCEPSS rescore
  69. 2026-06-19 19:25 UTCEPSS rescore
  70. 2026-06-19 19:25 UTCEPSS rescore
  71. 2026-06-18 17:52 UTCEPSS rescore
  72. 2026-06-18 17:52 UTCEPSS rescore
  73. 2026-06-18 14:13 UTCOSV refresh
  74. 2026-06-17 17:52 UTCEPSS rescore
  75. 2026-06-16 17:52 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-37750?
CVE-2025-37750 is a high vulnerability published on May 1, 2025. In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in decryption with multichannel After commit f7025d861694 ("smb: client: allocate crypto only for primary server") and commit b0abcd65ec54 ("smb: client: fix UAF in async decryption"), the channels started…
When was CVE-2025-37750 disclosed?
CVE-2025-37750 was first published in the National Vulnerability Database on May 1, 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-2025-37750 actively exploited?
CVE-2025-37750 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 71.2% of all scored CVEs.
What is the CVSS score of CVE-2025-37750?
CVE-2025-37750 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-37750?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-37750, 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.

Dependency Blast Radius

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