Review reviewHigh

CVE-2025-68336

Linux

In the Linux kernel, the following vulnerability has been resolved: locking/spinlock/debug: Fix data-race in do_raw_write_lock KCSAN reports: BUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock write (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1: do_raw_write_lock+0x120/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork read to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0: do_raw_write_lock+0x88/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork value changed: 0xffffffff -> 0x00000001 Reported by Ker...

CVSS: 7.5
EPSS: 0.40%
CISA KEV: Not listed
Published: 2025.12.23

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.40%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 8e5b2cf10844402054b52b489b525dc30cc16908, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < c228cb699a07a5f2d596d186bc5c314c99bb8bbf, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 93bd23524d63deb80fb85beb2e43fafeb1043d0f, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 39d2ef113416f1a4205b03fb0aa2e428d1412c77, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < b163a5e8c703201c905d6ec7920ed79d167e8442, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 16b3590c0e1e615757dade098c8fbc0d4f040c76, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 396a9270a7b90886be501611b13aa636f2e8c703, >= 1a365e822372ba24c9da0822bc583894f6f3d821 < c14ecb555c3ee80eeb030a4e46d00e679537f03a, >= 3106fb78d3579c8e9c9b3040f7f7841981919624, >= c0911024ff927ba5c4786b507004cb615be1d776, >= 09226e5c38639437565af01e6009a9286a351d04, >= c7673f01604fa722b9d7c1e29e17cec1b8ae09c5, >= c120c3dbeb76305235c8e557f84d9e2d7d0f5933, >= 4.4.209 < 4.5, >= 4.9.209 < 4.10, >= 4.14.164 < 4.15, >= 4.19.95 < 4.20, >= 5.4.11 < 5.5, >= 5.5
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: Not available