9.8

CVE-2026-74473: linux

CVSS: 9.8v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-74473DEBIAN-CVE-2026-74473
Published 15-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74473 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.6% 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
0.53%
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-2026:22091-1SUSE-SU-2026:24179-1SUSE-SU-2026:24181-1SUSE-SU-2026:24182-1SUSE-SU-2026:24184-1SUSE-SU-2026:24197-1

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: use pskb_network_may_pull() in route_shortcircuit() route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr)) (or ipv6hdr), which checks if bytes are available starting from skb->data. However, in vxlan_xmit(), skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20) only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of IP header), leaving the rest of the IP header potentially un-pulled in non-linear frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled linear buffer length. Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to the length check to ensure the full network header is present in the linear buffer.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

0.00 pp

From 0.53% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.53%

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

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.8-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ e4f67addf158f98f8197e08974966b18480dc751, < c419af4924c1593500a40519730ed98575d04a3e | ≥ e4f67addf158f98f8197e08974966b18480dc751, < 6bd0a3a1b5744166946f0c551a6665c3b46b05e4 | ≥ e4f67addf158f98f8197e08974966b18480dc751, < 214ba43faf106cb06cd3dd30999c5c809c868b53 | ≥ e4f67addf158f98f8197e08974966b18480dc751, < 42887be7c4cf283cce02cd0fb6411221167c8b6c | ≥ e4f67addf158f98f8197e08974966b18480dc751, < aa0d31376d574ac858a40078431a77127bf04ee4 | ≥ e4f67addf158f98f8197e08974966b18480dc751, < ee799977d7941dbfb11049e17edd9eaf4f8820f7 | ≥ e4f67addf158f98f8197e08974966b18480dc751, < 4f3f96e771a20263635bb5e1307c112d613b4bbd | ≥ e4f67addf158f98f8197e08974966b18480dc751, < 26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb | 3.8

3 vendors · 172 products

References

20 links
Show all 20 references