10

CVE-2026-74705: linux

CVSS: 10.0v3.1CriticalReceived
AliasesRHSA-2026:79784RHSA-2026:79786UBUNTU-CVE-2026-74705
Published 22-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74705 is a critical (CVSS 10.0) vulnerability in linux. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.50%
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 27 · Related 14
MGASA-2026-0506OPENSUSE-SU-2026:21910-1RHSA-2026:77634RHSA-2026:77690RHSA-2026:79778RHSA-2026:79782

Timeline

  1. 22-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation __skb_udp_tunnel_segment() gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb->head, the saved UDP header pointer is no longer valid. Get the UDP header after the pull to avoid a potential use-after-free.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.50% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.50%

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) | < 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)
Redhat29 products
  • bpftool< 0:7.3.0-427.155.1.el9_4
  • bpftool-debuginfo< 0:7.3.0-427.155.1.el9_4
  • kernel< 0:5.14.0-570.148.1.el9_6 | < 0:5.14.0-427.155.1.el9_4
  • kernel-64k< 0:5.14.0-570.148.1.el9_6 | < 0:5.14.0-427.155.1.el9_4
  • kernel-64k-core< 0:5.14.0-570.148.1.el9_6 | < 0:5.14.0-427.155.1.el9_4
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.9-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < 6a733a38b983d8c2e222f13968209010cf44de87 | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < 19d89b13a43640b2da2f277ee462d919d988cb6f | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < b3df61bb745eb5201eac22679a2839d4ccbf3442 | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < 1ae134c012e10384cdac420b5cc6e0615cde0b55 | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < 5161e67c561c4f28a5d9335a6e859b02511de92b | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < 64d322c288577793eedd352b96ef75234ed380fe | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < 588d4a6795d99d080f74ef0b5f391ea8c453ae5d | ≥ dbef491ebe7f3a4fb1b9111878b86a426fd540b7, < d0f86fb36eb260abd10007b62c9dcc1028e03e61 | 4.6

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References

26 links
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