CVE-2026-74406
vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Fix
- Fixed in 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
- 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: yes
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive(). udp_tunnel_sock_release() could set sk->sk_user_data to NULL while vxlan_gro_prepare_receive() is running. Let's check if rcu_dereference_sk_user_data() is NULL after skb_gro_remcsum_init().
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.7
- KernelLinux
From 4.7.0 · fixed in 6.1.178; From 6.2.0 · fixed in 6.6.145; From 6.7.0 · fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.19.0 · fixed in 7.1.5
References 8
git.kernel.org
- stable/c/022af89207fcc992ec5c712c14e2e018c335eb1e
- stable/c/a3104cc1fed994519538301efcaab175f9af6008
- stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd
- stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0
- stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4
- stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb
- stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd
- stable/c/30a45c0bffdd62350261e2f2689fdba426a33578