7.8

CVE-2025-22068: ublk: make sure ubq->canceling is set when queue is frozen

Modified
AliasesUBUNTU-CVE-2025-22068DEBIAN-CVE-2025-22068
Published 16-04-2025Last modified 05-08-2026

Vulnerability summary

CVE-2025-22068 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, 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 (CVE.org)
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 19 · Related 17
RHSA-2025:15782RHSA-2025:22395USN-7594-1USN-7594-2USN-7594-3USN-7605-1

Timeline

  1. 16-04-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ublk: make sure ubq->canceling is set when queue is frozen Now ublk driver depends on `ubq->canceling` for deciding if the request can be dispatched via uring_cmd & io_uring_cmd_complete_in_task(). Once ubq->canceling is set, the uring_cmd can be done via ublk_cancel_cmd() and io_uring_cmd_done(). So set ubq->canceling when queue is frozen, this way makes sure that the flag can be observed from ublk_queue_rq() reliably, and avoids use-after-free on uring_cmd.

CVSS metrics

5 scores · 4 sources · 2 versions

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

Affected systems

Version check

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

Ubuntu111 products
  • linux< 6.8.0-86.87
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1041.43
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 216c8f5ef0f209a3797292c487bdaa6991ab4b92, < 7e3497d7dacb5aee69dd9be842b778083cae0e75 | ≥ 216c8f5ef0f209a3797292c487bdaa6991ab4b92, < 5491400589e7572c2d2627ed6384302f7672aa1d | ≥ 216c8f5ef0f209a3797292c487bdaa6991ab4b92, < 9158359015f0eda00e521e35b7bc7ebce176aebf | ≥ 216c8f5ef0f209a3797292c487bdaa6991ab4b92, < 8741d0737921ec1c03cf59aebf4d01400c2b461a | 6.7
  • linux_kernel≥ 6.7, < 6.12.23 | ≥ 6.13, < 6.13.11 | ≥ 6.14, < 6.14.2
Debian1 product
  • linux< 6.12.25-1

3 vendors · 114 products

References

25 links
Show all 25 references