CVE-2025-37750

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

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, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2025-13072 (ENISA EUVD) · GHSA-r3p6-jggx-m3qg (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-06). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 1, 2025

Last Modified

October 30, 2026

Advisory Details (4)

Auto-updated Jul 30, 2026
Patch available.
Web page

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

https://git.kernel.org/stable/c/e859b216d94668bc66330e61be201234f4413d1a
Web page

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

https://git.kernel.org/stable/c/aa5a1e4b882964eb79d5b5d1d1e8a1a5efbb1d15
Web page

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

https://git.kernel.org/stable/c/950557922c1298464749c216d8763e97faf5d0a6
Web page

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

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

Patch Availability(16)

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 rangeFix by version rangeDependents
linux6.1.106-1 ... 7.3~rc7-1~exp1 (371 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.12.25-1: fixed in 6.12.25-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.12.25-1: fixed in 6.12.25-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(12)

Data Freshness Timeline

(refreshed 7× in last 7d / 46× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 225 rows on record for this CVE, as 99 entries (1 repeat merged).

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 125 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-11-12 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-11-11 16:36 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  4. 2026-11-10 16:40 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-11-09 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-11-08 16:37 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  7. 2026-11-07 16:36 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-11-06 21:22 UTCEchelonGraph re-scored
  9. 2026-11-06 21:22 UTCVendor advisory
  10. 2026-11-06 21:22 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-11-06 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-11-05 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-11-04 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-11-03 16:44 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-11-02 16:42 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-11-01 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-10-30 13:30 UTCVendor advisory
  20. 2026-10-30 13:30 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  21. 2026-10-30 12:31 UTCEchelonGraph re-scored
  22. 2026-10-30 12:31 UTCVendor advisory
  23. 2026-10-30 12:31 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-10-29 03:14 UTCEchelonGraph re-scored
Show 74 more
  1. 2026-10-29 03:14 UTCVendor advisory
  2. 2026-10-29 03:13 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  4. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  6. 2026-10-25 16:31 UTCEchelonGraph re-scored
  7. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  8. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  11. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  12. 2026-10-21 13:48 UTCVendor advisory
  13. 2026-10-21 13:48 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  14. 2026-10-21 12:57 UTCVendor advisory
  15. 2026-10-21 12:57 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-21 12:28 UTCEchelonGraph re-scored
  17. 2026-10-21 12:28 UTCVendor advisory
  18. 2026-10-21 12:27 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-10-19 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-10-18 17:06 UTCEchelonGraph re-scored
  22. 2026-10-18 17:06 UTCVendor advisory
  23. 2026-10-18 17:06 UTCGHSA enrichmentGHSA-r3p6-jggx-m3qg · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-10-18 05:36 UTCEchelonGraph re-scored
  26. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  27. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  28. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  29. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  30. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  31. 2026-10-12 17:08 UTCEchelonGraph re-scored
  32. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  33. 2026-10-11 20:41 UTCEchelonGraph re-scored
  34. 2026-10-11 18:51 UTCEchelonGraph re-scored
  35. 2026-10-11 15:29 UTCEchelonGraph re-scored
  36. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  37. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
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  40. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.4% · 30th percentile
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  42. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  43. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  44. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  45. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  46. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  47. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  48. 2026-09-27 03:45 UTCOSV refresh
  49. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  50. 2026-09-26 00:24 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  51. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  52. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  53. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  54. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  55. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  56. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  57. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  58. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  59. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  60. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  61. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  62. 2026-09-10 09:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  63. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  64. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  65. 2026-09-07 12:48 UTCOSV refresh
  66. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  67. 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  68. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  69. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 28th percentile
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  71. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  72. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  73. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  74. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.4% · 28th percentile

Frequently asked(5)

What is CVE-2025-37750?
CVE-2025-37750 is a high-severity vulnerability; its CVE record was 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 the CVE record for CVE-2025-37750 published?
The CVE record for CVE-2025-37750 was published on May 1, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 30, 2026; the record at its source may have been updated since.
Is CVE-2025-37750 actively exploited?
CVE-2025-37750 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-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?
A fix for CVE-2025-37750 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-37750 are linked in the Vendor Advisories panel on this page.

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