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No exploitation reportedFix available

CVE-2025-37924

No exploitation reported by the sources we read.

  • Published2025-05-20
  • Fixed in6.14.6 · 6.12.28 · 6.6.90 · 6.1.138
  • WeaknessCWE-416

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.

Timeline

dates in UTC
  1. 2025-05-2016:15CVE publishedNVD

Versions per branch

NVD · OSV
Linux linux kernel
BranchAffectedFixed in
6.x≥ 6.13, < 6.14.66.14.6
6.x≥ 6.13.0, < 6.14.66.14.6
6.x≥ 6.7, < 6.12.286.12.28
6.x≥ 6.7.0, < 6.12.286.12.28
6.x≥ 6.2, < 6.6.906.6.90
6.x≥ 6.2.0, < 6.6.906.6.90
6.1≥ 5.15, < 6.1.1386.1.138
6.1≥ 5.15.0, < 6.1.1386.1.138
6.15= 6.15no fix published
Debian debian linux
BranchAffectedFixed in
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA2 products

As Linux, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Linuxother versions: not affected

    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected
    • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e34a33d5d7e87399af0a138bb32f6a3e95dd83d2fixed in e34a33d5d7e87399af0a138bb32f6a3e95dd83d2git
    • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < b447463562238428503cfba1c913261047772f90fixed in b447463562238428503cfba1c913261047772f90git
    • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e18c616718018dfc440e4a2d2b94e28fe91b1861fixed in e18c616718018dfc440e4a2d2b94e28fe91b1861git
    • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 28c756738af44a404a91b77830d017bb0c525890fixed in 28c756738af44a404a91b77830d017bb0c525890git
    • ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e86e9134e1d1c90a960dd57f59ce574d27b9a124fixed in e86e9134e1d1c90a960dd57f59ce574d27b9a124git
  • Linuxother versions: affected

    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected
    • = 5.15no fix stated

    Not affected < 5.15 · ≥ 6.1.138, ≤ 6.1.* · ≥ 6.6.90, ≤ 6.6.* · ≥ 6.12.28, ≤ 6.12.* · ≥ 6.14.6, ≤ 6.14.* · ≥ 6.15

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-05

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • dwarvesMageia:9all versions · fixed in 1.30-1.mga9
  • kernelopenEuler:24.03-LTS-SP2all versions · fixed in 6.6.0-109.0.0.115.oe2403sp2
  • kernelopenEuler:24.03-LTS-SP1all versions · fixed in 6.6.0-109.0.0.112.oe2403sp1
  • kernelopenEuler:24.03-LTSall versions · fixed in 6.6.0-109.0.0.101.oe2403
  • kernelMageia:9all versions · fixed in 6.6.93-1.mga9and 1 other package
  • kernel-firmwareMageia:9all versions · fixed in 20250509-1.mga9
  • kmod-virtualboxMageia:9all versions · fixed in 7.1.8-3.mga9
  • kmod-xtables-addonsMageia:9all versions · fixed in 3.24-80.mga9

93 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-37924 Red Hat Product Security

    kernel: ksmbd: fix use-after-free in kerberos authentication

Full record on NVD

Fix

  1. Update Linux linux kernel to 6.14.6 · 6.12.28 · 6.6.90 · 6.1.138

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2025-05-20
Last Modified
2026-10-15
NVD status
Modified
GitHub Advisory
GHSA-3x67-44wh-mrgf

Frequently asked questions

What is CVE-2025-37924?

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.

Is CVE-2025-37924 actively exploited?

Active exploitation of CVE-2025-37924 has not been confirmed. Its EPSS score was 24.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-37924?

CVE-2025-37924 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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