CVE-2024-26602
sched/membarrier: reduce the ability to hammer on sys_membarrier
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: sched/membarrier: reduce the ability to hammer on sys_membarrier On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in order to serialize the accesses to prevent the ability for this to be called at too high of a frequency and saturate the machine.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.14
References 8
git.kernel.org
- stable/c/3cd139875e9a7688b3fc715264032620812a5fa3
- stable/c/2441a64070b85c14eecc3728cc87e883f953f265
- stable/c/db896bbe4a9c67cee377e5f6a743350d3ae4acf6
- stable/c/50fb4e17df319bb33be6f14e2a856950c1577dee
- stable/c/24ec7504a08a67247fbe798d1de995208a8c128a
- stable/c/b6a2a9cbb67545c825ec95f06adb7ff300a2ad71
- stable/c/c5b2063c65d05e79fad8029324581d86cfba7eea
- stable/c/944d5fe50f3f03daacfea16300e656a1691c4a23