7.8

CVE-2026-72164: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-72164DEBIAN-CVE-2026-72164
Published 15-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-72164 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.8% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 30 · Related 30
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1SUSE-SU-2026:24181-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: avoid moving extents to occupied clusters For non-auto OCFS2_IOC_MOVE_EXT operations, userspace supplies a physical me_goal. ocfs2_move_extent() initializes new_phys_cpos from that goal and expects ocfs2_probe_alloc_group() to replace it with a free run in the target block group. The probe currently leaves *phys_cpos unchanged if the scan reaches the end of the group without finding a free run. An occupied goal at the last bit can therefore survive the probe and be passed to __ocfs2_move_extent(), which copies file data into a cluster still owned by another inode before the bitmap is updated. When the probe does find a free run, it also subtracts move_len from the ending bit. The start of an N-bit run ending at i is i - N + 1, so the current calculation can report the bit immediately before the free run. Clear *phys_cpos before scanning and use the correct free-run start. Callers already treat a zero result as -ENOSPC, so failed probes no longer continue with an occupied caller-controlled goal.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.01 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.180-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
  • linux≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < 3112afebf2a76e522fbaabcbb0c47aafbdc35932 | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < 35486b291b8fbde6c4d0b1c79e565c6260d3329d | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < 19f7b04924b20b81dabbeed19d5542792ba5b6d6 | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < e281d892ce5870a50fdc718cb3bfc3dd5b62c728 | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < 0d0c5c17b18bdbc592ac26ab4d1de7e3dbf9be1e | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < d5d5a21fb33cd9b963aea99da81e4dacd452cd95 | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < 4d1953d3aeb4a7f6623083e1839068ee1c157db2 | ≥ e6b5859cccfa0fec02f3c5b1069481efc7186f47, < 22920541c35a9f23f219038ba5874c843a7c4419 | 3.0

3 vendors · 171 products

References

27 links
Show all 27 references