9.8

CVE-2026-89970: linux

CVSS: 9.8v3.1CriticalReceived
AliasesUBUNTU-CVE-2026-89970DEBIAN-CVE-2026-89970
Published 16-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-89970 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 55.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.80%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 4
MGASA-2026-0506OPENSUSE-SU-2026:11880-1OPENSUSE-SU-2026:22091-1RHSA-2026:81406RHSA-2026:81552SUSE-SU-2026:4640-1

Timeline

  1. 16-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: Synchronize timeout work during SQ teardown nvmet_auth_sq_free() cancels auth_expired_work with cancel_delayed_work(). If the work has already started, cancellation does not wait for the callback. Transport teardown can consequently free or reuse the queue containing struct nvmet_sq while nvmet_auth_expired_work() still accesses that SQ. Add a teardown-specific helper that synchronously drains the delayed work before freeing authentication state, and use it from nvmet_sq_destroy(). Keep the non-synchronous helper for in-band authentication state cleanup, where the SQ owner remains alive.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.80%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

+0.02 pp

From 0.78% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.80%

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

Ubuntu142 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
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 1a70200f404ae210b4f0334e3936e84f8edb6bc8, < 664022fa1c93f4eba09ef5ee02411b9709dd7a93 | ≥ 1a70200f404ae210b4f0334e3936e84f8edb6bc8, < c3c126a6142a1335bc8c34a5607c39cf01daf295 | ≥ 1a70200f404ae210b4f0334e3936e84f8edb6bc8, < c17c87bde6d6f5252a6a6f0a94b2430164aa28d5 | ≥ 1a70200f404ae210b4f0334e3936e84f8edb6bc8, < 7555ddd60af72df2862dd8f9b730a9848577edda | ≥ 1a70200f404ae210b4f0334e3936e84f8edb6bc8, < eb4f9127a2b8a152743f1ee597627e2f69cb54fe | ≥ 1a70200f404ae210b4f0334e3936e84f8edb6bc8, < eaa948c0e19b1bb2d93262207bca0c3d19cc3406 | 6.0

3 vendors · 145 products

References

11 links
Show all 11 references