7.5

CVE-2025-71131: crypto: seqiv - Do not use req->iv after crypto_aead_encrypt

Modified
AliasesUBUNTU-CVE-2025-71131DEBIAN-CVE-2025-71131
Published 14-01-2026Last modified 19-10-2026

Vulnerability summary

CVE-2025-71131 is a high (CVSS 7.5) Use After Free vulnerability in linux. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 23.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 49 · Related 43
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0017MGASA-2026-0018

Timeline

  1. 14-01-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: seqiv - Do not use req->iv after crypto_aead_encrypt As soon as crypto_aead_encrypt is called, the underlying request may be freed by an asynchronous completion. Thus dereferencing req->iv after it returns is invalid. Instead of checking req->iv against info, create a new variable unaligned_info and use it for that purpose instead.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < 18202537856e0fae079fed2c9308780bcff2bb9d | ≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < baf0e2d1e03ddb04781dfe7f22a654d3611f69b2 | ≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < 50f196d2bbaee4ab2494bb1b0d294deba292951a | ≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < 0279978adec6f1296af66b642cce641c6580be46 | ≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < ccbb96434d88e32358894c879457b33f7508e798 | ≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < 5476f7f8a311236604b78fcc5b2a63b3a61b0169 | ≥ 0a270321dbf948963aeb0e8382fe17d2c2eb3771, < 50fdb78b7c0bcc550910ef69c0984e751cac72fa | 2.6.25
  • linux_kernel≥ 2.6.25.1, < 5.10.248 | ≥ 5.11, < 5.15.198 | ≥ 5.16, < 6.1.160 | ≥ 6.2, < 6.6.120 | ≥ 6.7, < 6.12.64 | ≥ 6.13, < 6.18.4 | 2.6.25 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.5-1

3 vendors · 159 products

References

43 links
Show all 43 references