7.8

CVE-2026-23013: net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback

Modified
AliasesUBUNTU-CVE-2026-23013DEBIAN-CVE-2026-23013
Published 25-01-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-23013 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.19%
0%100%
Low · +0.02 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 7 · Related 6
DSA-6126-1USN-8570-1USN-8570-2USN-8594-1USN-8604-1USN-8605-1

Timeline

  1. 25-01-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback octep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to ioq_vector. If request_irq() fails part-way, the rollback loop calls free_irq() with dev_id set to 'oct', which does not match the original dev_id and may leave the irqaction registered. This can keep IRQ handlers alive while ioq_vector is later freed during unwind/teardown, leading to a use-after-free or crash when an interrupt fires. Fix the error path to free IRQs with the same ioq_vector dev_id used during request_irq().

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.18% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu107 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1, < aa05a8371ae4a452df623f7202c72409d3c50e40 | ≥ 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1, < aa4c066229b05fc3d3c5f42693d25b1828533b6e | ≥ 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1, < f93fc5d12d69012788f82151bee55fce937e1432 | 6.9
  • linux_kernelEOL≥ 6.9.1, < 6.12.67 | ≥ 6.13, < 6.18.7 | 6.9 | 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< 6.12.69-1 | < 6.18.8-1

3 vendors · 110 products

References

13 links
Show all 13 references