CVE-2026-74330

configfs: fix lockless traversals of ->s_children

State: Published
Severity: 7.8 High
Published: Aug 15, 2026
Updated: Oct 16, 2026
Reserved: Aug 15, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	6f61076406251626be39651d114fac412b1e0c39 to before 77fd6f50f633a52c2db061e7d71d8cb486b0265eAffected 6f61076406251626be39651d114fac412b1e0c39 to before 91f289728ec706b7ff1ca0ee845dd73ff2253488Affected 6f61076406251626be39651d114fac412b1e0c39 to before b166ab78dc3f48e83d2c80bdfde4159b31fdc5fbAffected 6f61076406251626be39651d114fac412b1e0c39 to before 9e57e2863872e82e7c7237bc32299f67ebebc543Affected 6f61076406251626be39651d114fac412b1e0c39 to before 459860529c109c5ce08b81c0776ca1200eaaeb4aAffected 6f61076406251626be39651d114fac412b1e0c39 to before 637ef4961470e04455102b34ac484a34d8eca0a4Affected 6f61076406251626be39651d114fac412b1e0c39 to before e6d93108e0a27d7e6f95c7e45017d14ba2900d32Affected 6f61076406251626be39651d114fac412b1e0c39 to before 9b9e8bb81c41fd27e7b57a1c936fde140548535fAffected
LinuxLinux	2.6.27Affected before 2.6.27Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

6f61076406251626be39651d114fac412b1e0c39 to before 77fd6f50f633a52c2db061e7d71d8cb486b0265eAffected
6f61076406251626be39651d114fac412b1e0c39 to before 91f289728ec706b7ff1ca0ee845dd73ff2253488Affected
6f61076406251626be39651d114fac412b1e0c39 to before b166ab78dc3f48e83d2c80bdfde4159b31fdc5fbAffected
6f61076406251626be39651d114fac412b1e0c39 to before 9e57e2863872e82e7c7237bc32299f67ebebc543Affected
6f61076406251626be39651d114fac412b1e0c39 to before 459860529c109c5ce08b81c0776ca1200eaaeb4aAffected
6f61076406251626be39651d114fac412b1e0c39 to before 637ef4961470e04455102b34ac484a34d8eca0a4Affected
6f61076406251626be39651d114fac412b1e0c39 to before e6d93108e0a27d7e6f95c7e45017d14ba2900d32Affected
6f61076406251626be39651d114fac412b1e0c39 to before 9b9e8bb81c41fd27e7b57a1c936fde140548535fAffected

LinuxLinux

2.6.27Affected
before 2.6.27Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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