CVE-2026-23124 Affecting kernel-uek-doc package, versions <0:5.15.0-318.199.3.2.el8uek
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ORACLE8-KERNELUEKDOC-15574942
- published15 Mar 2026
- disclosed14 Feb 2026
Introduced: 14 Feb 2026
CVE-2026-23124 (opens in a new tab)How to fix?
Upgrade Oracle:8 kernel-uek-doc to version 0:5.15.0-318.199.3.2.el8uek or higher.
This issue was patched in ELSA-2026-50145.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-doc package and not the kernel-uek-doc package as distributed by Oracle.
See How to fix? for Oracle:8 relevant fixed versions and status.
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 < IPV6_MIN_MTU || mtu > skb->dev->mtu) in a future patch.
[1] BUG: KCSAN: data-race in ndisc_router_discovery / ndisc_router_discovery
read to 0xffff888119809c20 of 4 bytes by task 25817 on cpu 1: ndisc_router_discovery+0x151d/0x1c90 net/ipv6/ndisc.c:1558 ndisc_rcv+0x2ad/0x3d0 net/ipv6/ndisc.c:1841 icmpv6_rcv+0xe5a/0x12f0 net/ipv6/icmp.c:989 ip6_protocol_deliver_rcu+0xb2a/0x10d0 net/ipv6/ip6_input.c:438 ip6_input_finish+0xf0/0x1d0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x5e/0x140 net/ipv6/ip6_input.c:500 ip6_mc_input+0x27c/0x470 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x336/0x340 net/ipv6/ip6_input.c:79 ...
write to 0xffff888119809c20 of 4 bytes by task 25816 on cpu 0: ndisc_router_discovery+0x155a/0x1c90 net/ipv6/ndisc.c:1559 ndisc_rcv+0x2ad/0x3d0 net/ipv6/ndisc.c:1841 icmpv6_rcv+0xe5a/0x12f0 net/ipv6/icmp.c:989 ip6_protocol_deliver_rcu+0xb2a/0x10d0 net/ipv6/ip6_input.c:438 ip6_input_finish+0xf0/0x1d0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x5e/0x140 net/ipv6/ip6_input.c:500 ip6_mc_input+0x27c/0x470 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x336/0x340 net/ipv6/ip6_input.c:79 ...
value changed: 0x00000000 -> 0xe5400659
References
- https://linux.oracle.com/cve/CVE-2026-23124.html
- https://linux.oracle.com/errata/ELSA-2026-50145.html
- https://git.kernel.org/stable/c/2619499169fb1c2ac4974b0f2d87767fb543582b
- https://git.kernel.org/stable/c/2a2b9d25f801afecf2f83cacce98afa8fd73e3c9
- https://git.kernel.org/stable/c/4630897eb1a039b5d7b737b8dc9521d9d4b568b5
- https://git.kernel.org/stable/c/9a063f96d87efc3a6cc667f8de096a3d38d74bb5
- https://git.kernel.org/stable/c/e3c1040252e598f7b4e33a42dc7c38519bc22428
- https://git.kernel.org/stable/c/fad8f4ff7928f4d52a062ffdcffa484989c79c47