5.5

CVE-2026-101308: freebsd

CVSS: 5.5v3.1MediumAnalyzed
Published 15-10-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-101308 is a medium (CVSS 5.5) vulnerability in freebsd. EPSS estimates a 0.07% chance of exploitation in the next 30 days, higher than 0% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.07%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-10-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

When an audio channel's buffer needs to be resized, the sound(4) driver checks that the buffer is not memory-mapped and then drops the channel lock to allocate a new buffer. An mmap(2) call on another thread can complete during this window, after which the resize path frees the now-mapped buffer without rechecking. An unprivileged local user with access to a sound device can exploit this race to trigger a use-after-free in the kernel, potentially escalating privileges.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.07%

Chance of exploitation in the next 30 days

Percentile

0%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

15-10-202619-10-2026
EPSS score
0.07%

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

Affected systems

Freebsd1 product
  • freebsd≥ 15.1-RELEASE, < p5 | ≥ 14.5-RELEASE, < p2 | ≥ 14.4-RELEASE, < p11 | 14.4 | 14.4:p1 | 14.4:p10 | 14.4:p2 | 14.4:p3 | 14.4:p4 | 14.4:p5 | 14.4:p6 | 14.4:p7 | 14.4:p8 | 14.4:p9 | 14.5 | 14.5:p1 | 15.1 | 15.1:p1 | 15.1:p2 | 15.1:p3 | 15.1:p4

1 vendor · 1 product

References

1 links