CVE-2026-93134: printk: Fix possible console use-after-free

Received
AliasesUBUNTU-CVE-2026-93134DEBIAN-CVE-2026-93134
Published 17-09-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-93134 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.6% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
0%100%
Low · 0.00 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 10 · Related 8
MGASA-2026-0506MGASA-2026-0542OPENSUSE-SU-2026:11880-1OPENSUSE-SU-2026:22167-1SUSE-SU-2026:24386-1SUSE-SU-2026:24422-1

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: printk: Fix possible console use-after-free When emitting a record via legacy printing, it is possible that a handover to another legacy printing context occurs. When a context has performed a handover, the console SRCU read lock is released and the pointer to the console struct might now be invalid. Therefore, after calling nbcon_legacy_emit_next_record() or console_emit_next_record(), it is necessary to check if a handover occurred _before_ further @con usage. Sashiko pointed out that console_flush_one_record() was not doing this. In console_flush_one_record(), after emitting a record, move the further usage of @con after the handover check.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% 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

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu120 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)
Debian2 products
  • linux< 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ c158834b223fbfab3a14855ac203b8d9cddbbefd, < f0104a7b730de32eefb3d4a27279592b5504ad59 | ≥ c158834b223fbfab3a14855ac203b8d9cddbbefd, < fbf9bb81b21537ede387a31cc586f1d2ce66a74e | ≥ c158834b223fbfab3a14855ac203b8d9cddbbefd, < 8f194dee0c0d1223255bae1429e1939882f540fc | ≥ c158834b223fbfab3a14855ac203b8d9cddbbefd, < 36630cafbeede0b64c370edb2f7b4094327ee1e0 | 6.12

3 vendors · 123 products

References

8 links