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CVE-2026-74330

configfs: fix lockless traversals of ->s_children

HIGH
7.8
CVSS Score
Published: August 15, 2026 at 05:58 AM UTC
Updated: October 16, 2026 at 07:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: configfs: fix lockless traversals of ->s_children Having the parent directory locked protects entries from removal by another thread, but it does *not* protect cursors from being moved around by lseek() - or freed, for that matter.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
2.6.276f61076406251626be39651d114fac412b1e0c39
Vendor states this is fixed in 459860529c109c5ce08b81c0776ca1200eaaeb4a (fixed)
Vendor states this is fixed in 637ef4961470e04455102b34ac484a34d8eca0a4 (fixed)
Vendor states this is fixed in 77fd6f50f633a52c2db061e7d71d8cb486b0265e (fixed)
Vendor states this is fixed in 91f289728ec706b7ff1ca0ee845dd73ff2253488 (fixed)
Vendor states this is fixed in 9b9e8bb81c41fd27e7b57a1c936fde140548535f (fixed)
Vendor states this is fixed in 9e57e2863872e82e7c7237bc32299f67ebebc543 (fixed)
Vendor states this is fixed in b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb (fixed)
Vendor states this is fixed in e6d93108e0a27d7e6f95c7e45017d14ba2900d32 (fixed)
Vendor states this is fixed in 2.6.27 (unaffected)
Vendor states this is fixed in 5.10.261 (unaffected)
Vendor states this is fixed in 5.15.212 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/77fd6f50f633a52c2db061e7d71d8cb486b0265e
Source: cverecord
https://git.kernel.org/stable/c/91f289728ec706b7ff1ca0ee845dd73ff2253488
Source: cverecord
https://git.kernel.org/stable/c/b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb
Source: cverecord
https://git.kernel.org/stable/c/9e57e2863872e82e7c7237bc32299f67ebebc543
Source: cverecord
https://git.kernel.org/stable/c/459860529c109c5ce08b81c0776ca1200eaaeb4a
Source: cverecord
https://git.kernel.org/stable/c/637ef4961470e04455102b34ac484a34d8eca0a4
Source: cverecord
https://git.kernel.org/stable/c/e6d93108e0a27d7e6f95c7e45017d14ba2900d32
Source: cverecord
https://git.kernel.org/stable/c/9b9e8bb81c41fd27e7b57a1c936fde140548535f

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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