CVE-2024-27390
ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed. Under load, synchronize_net() can last between 200 usec and 5 ms. KASAN seems to agree as well.
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
5.13
References 7
git.kernel.org
- stable/c/bfd2f3c58ad86ad33db80515e6c3503e0414e44b
- stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50
- stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04
- stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373
- stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7
- stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88
- stable/c/17ef8efc00b34918b966388b2af0993811895a8c