5.5

CVE-2024-26602: sched/membarrier: reduce the ability to hammer on sys_membarrier

Modified
AliasesUBUNTU-CVE-2024-26602DEBIAN-CVE-2024-26602
Published 24-02-2024Last modified 11-05-2026

Vulnerability summary

CVE-2024-26602 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.32%
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 43 · Related 26
DLA-3840-1DLA-3842-1DSA-5681-1RHSA-2024:1249RHSA-2024:1250RHSA-2024:1332

Timeline

  1. 24-02-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: sched/membarrier: reduce the ability to hammer on sys_membarrier On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in order to serialize the accesses to prevent the ability for this to be called at too high of a frequency and saturate the machine.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.32% 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

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu115 products
  • linux< 4.15.0-230.242 | < 5.4.0-181.201 | < 5.15.0-106.116
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1174.187 | < 5.4.0-1124.134 | < 5.15.0-1061.67
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 22e4ebb975822833b083533035233d128b30e98f, < 3cd139875e9a7688b3fc715264032620812a5fa3 | ≥ 22e4ebb975822833b083533035233d128b30e98f, < 2441a64070b85c14eecc3728cc87e883f953f265 | ≥ 22e4ebb975822833b083533035233d128b30e98f, < db896bbe4a9c67cee377e5f6a743350d3ae4acf6 | ≥ 22e4ebb975822833b083533035233d128b30e98f, < 50fb4e17df319bb33be6f14e2a856950c1577dee | ≥ 22e4ebb975822833b083533035233d128b30e98f, < 24ec7504a08a67247fbe798d1de995208a8c128a | ≥ 22e4ebb975822833b083533035233d128b30e98f, < b6a2a9cbb67545c825ec95f06adb7ff300a2ad71 | ≥ 22e4ebb975822833b083533035233d128b30e98f, < c5b2063c65d05e79fad8029324581d86cfba7eea | ≥ 22e4ebb975822833b083533035233d128b30e98f, < 944d5fe50f3f03daacfea16300e656a1691c4a23 | 4.14
  • linux_kernel≥ 4.14.0, < 4.19.307 | ≥ 4.20.0, < 5.4.269 | ≥ 5.5.0, < 5.10.210 | ≥ 5.11.0, < 5.15.149 | ≥ 5.16.0, < 6.1.79 | ≥ 6.2.0, < 6.6.18 | ≥ 6.7.0, < 6.7.6
Debian1 product
  • linux< 6.1.82-1 | < 6.7.7-1

3 vendors · 118 products

References

30 links
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