CVE-2026-72010: cgroup/cpuset: rebind mm mempolicy to effective_mems, not mems_allowed

Received
AliasesUBUNTU-CVE-2026-72010DEBIAN-CVE-2026-72010
Published 15-08-2026Last modified 17-08-2026

Vulnerability summary

CVE-2026-72010 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.5% 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
0.22%
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 16 · Related 15
SUSE-SU-2026:5091-1USN-8875-1USN-8875-2USN-8876-1USN-8877-1USN-8878-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 17-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: rebind mm mempolicy to effective_mems, not mems_allowed Creating a child cpuset where cpuset.mems is never set leads to a div/0 when a VMA mempolicy with MPOL_F_RELATIVE_NODES rebinds in response to a CPU hotplug event. Reproduction steps: 1) Create a cgroup w/ cpuset controls (do not set cpuset.mems) 2) Move the task into the child cpuset 3) Create a VMA mempolicy for that task with MPOL_F_RELATIVE_NODES 4) unplug and hotplug a cpu echo 0 > /sys/devices/system/cpu/cpu1/online echo 1 > /sys/devices/system/cpu/cpu1/online 5) mempolicy rebind does a div/0 in mpol_relative_nodemask on the call to __nodes_fold() The cpuset code passes (cs->mems_allowed) which is not guaranteed to have nodes to the rebind routine. Use cs->effective_mems instead, which is guaranteed to have a non-empty nodemask once we reach that code path. [ david: add a comment, slightly rephrase description ]

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 06-10-2026

06-10-202605-11-2026

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.

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≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < b7adeba2a21c98c7b20f18e27e3ead86bdb5e08d | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < fcc8c310539c3cc523419113b227161a96b50550 | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < 4b06449384b9ee5b3372bab60601ba5cd4162086 | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < 02f67c4f88be8e3dbd91951d13cdcc5bcc82e9c7 | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < fc680afc510157f6b137956011c09abc23eb0842 | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < c844b7d9a9586de15dd28c06da5cc7f6ab28787d | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < c17f06d8a085d6be58b544a440ce243f5e441a60 | ≥ ae1c802382f7af60aa54879fb4f5920a9df1ff48, < b983c56426383e4a06fa5970c4e33cee879b1482 | 3.17

3 vendors · 171 products

References

27 links
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