9.8

CVE-2026-74406: linux

CVSS: 9.8v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-74406DEBIAN-CVE-2026-74406
Published 15-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74406 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 22 · Related 22
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1SUSE-SU-2026:4279-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

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().

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

0.00 pp

From 0.49% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.49%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu168 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-34.34
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1013.13
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ 5602c48cf87562c2f95b831d690631935e834295, < 9c58c729d32e7cea5772cc44929c6cd61e5a31cd | ≥ 5602c48cf87562c2f95b831d690631935e834295, < f79c80f173fda9545b220c1f094b65fc06c252d0 | ≥ 5602c48cf87562c2f95b831d690631935e834295, < 08f40c0d23c67c3aa4224c3311e134999c721fb4 | ≥ 5602c48cf87562c2f95b831d690631935e834295, < 4a8cde6f7281ea2c4c290f9ad9923b3631defceb | ≥ 5602c48cf87562c2f95b831d690631935e834295, < ef44dac2a37f86eeae6b88ed10a6d60b35387dfd | ≥ 5602c48cf87562c2f95b831d690631935e834295, < 30a45c0bffdd62350261e2f2689fdba426a33578 | 4.7

3 vendors · 170 products

References

19 links
Show all 19 references