CVE-2025-68336High· 7.5▾ TwilightIn 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 0xffff8000…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.5%
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 Kernel Concurrency Sanitizer on: CPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111
Commit 1a365e822372 ("locking/spinlock/debug: Fix various data races") has adressed most of these races, but seems to be not consistent/not complete.
From do_raw_write_lock() only debug_write_lock_after() part has been converted to WRITE_ONCE(), but not debug_write_lock_before() part. Do it now.
Linux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 8e5b2cf10844402054b52b489b525dc30cc16908Linux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < c228cb699a07a5f2d596d186bc5c314c99bb8bbfLinux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 93bd23524d63deb80fb85beb2e43fafeb1043d0fLinux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 39d2ef113416f1a4205b03fb0aa2e428d1412c77Linux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < b163a5e8c703201c905d6ec7920ed79d167e8442Linux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 16b3590c0e1e615757dade098c8fbc0d4f040c76Linux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < 396a9270a7b90886be501611b13aa636f2e8c703Linux >= 1a365e822372ba24c9da0822bc583894f6f3d821 < c14ecb555c3ee80eeb030a4e46d00e679537f03aLinux 3106fb78d3579c8e9c9b3040f7f7841981919624Linux c0911024ff927ba5c4786b507004cb615be1d776Linux 09226e5c38639437565af01e6009a9286a351d04Linux c7673f01604fa722b9d7c1e29e17cec1b8ae09c5Linux c120c3dbeb76305235c8e557f84d9e2d7d0f5933Linux >= 4.4.209 < 4.5Linux >= 4.9.209 < 4.10Linux >= 4.14.164 < 4.15Linux >= 4.19.95 < 4.20Linux >= 5.4.11 < 5.5Linux 5.5Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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