CVE-2026-23124
Severity
5.5MEDIUM
EPSS
0.0%
top 96.85%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 14
Latest updateApr 9
Description
In the Linux kernel, the following vulnerability has been resolved:
ipv6: annotate data-race in ndisc_router_discovery()
syzbot found that ndisc_router_discovery() could read and write
in6_dev->ra_mtu without holding a lock [1]
This looks fine, IFLA_INET6_RA_MTU is best effort.
Add READ_ONCE()/WRITE_ONCE() to document the race.
Note that we might also reject illegal MTU values
(mtu skb->dev->mtu) in a future patch.
[1]
BUG: KCSAN: data-race in ndisc_router_discovery / ndisc_router_discover…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages3 packages
▶CVEListV5linux/linux49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 — 4630897eb1a039b5d7b737b8dc9521d9d4b568b5+6
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-528j-v6ch-qq32: In the Linux kernel, the following vulnerability has been resolved:
ipv6: annotate data-race in ndisc_router_discovery()
syzbot found that ndisc_rou↗2026-02-14
OSV▶
CVE-2026-23124: In the Linux kernel, the following vulnerability has been resolved: ipv6: annotate data-race in ndisc_router_discovery() syzbot found that ndisc_route↗2026-02-14