5.5

CVE-2026-46172: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46172DEBIAN-CVE-2026-46172
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46172 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.17%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 50 · Related 50
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1SUSE-SU-2026:22460-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: xfrm6: release dst on error in xfrm6_rcv_encap() xfrm6_rcv_encap() performs an IPv6 route lookup when the skb does not already have a dst attached. ip6_route_input_lookup() returns a referenced dst entry even when the lookup resolves to an error route. If dst->error is set, xfrm6_rcv_encap() drops the skb without attaching the dst to the skb and without releasing the reference returned by the lookup. Repeated packets hitting this path therefore leak dst entries. Release the dst before jumping to the drop path.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.04 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

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

Ubuntu154 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < a0721bcd72641c32b281f227a94505b31cf54117 | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < a20b34f6e854fe6f2aa82528fae7a88759919eb4 | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < 870560015ce6e0d8f841c6a8aba33c44be52c727 | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < c2efc4956981066df2fef1cc77391b523db6d8e4 | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < 554c9b090c8ac5b1c5c507f4badf8d5d0c9c6e13 | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < 9d5047782f9bd2829e529df69209bf3232eb561f | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < 6a5eec0a2a0e99ec9743cf8f1c4082178811d90a | ≥ 0146dca70b877b73c5fd9c67912b8a0ca8a7bac7, < bc0fcb9823cd0894934cf968b525c575833d7078 | 5.8
  • linux_kernel≥ 5.8, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 157 products

References

54 links
Show all 54 references