5.5

CVE-2024-41055: mm: prevent derefencing NULL ptr in pfn_section_valid()

Modified
AliasesUBUNTU-CVE-2024-41055DEBIAN-CVE-2024-41055
Published 29-07-2024Last modified 23-05-2026

Vulnerability summary

CVE-2024-41055 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.1% 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
0.26%
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 35 · Related 24
DLA-4008-1DSA-5747-1MGASA-2024-0277MGASA-2024-0278RHSA-2024:6567RHSA-2024:6990

Timeline

  1. 29-07-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.26% 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.

Ubuntu112 products
  • linux< 5.15.0-121.131 | < 6.8.0-48.48
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1069.75 | < 6.8.0-1018.20
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 90ad17575d26874287271127d43ef3c2af876cea, < 0100aeb8a12d51950418e685f879cc80cb8e5982 | ≥ b448de2459b6d62a53892487ab18b7d823ff0529, < bc17f2377818dca643a74499c3f5333500c90503 | ≥ 68ed9e33324021e9d6b798e9db00ca3093d2012a, < 941e816185661bf2b44b488565d09444ae316509 | ≥ 70064241f2229f7ba7b9599a98f68d9142e81a97, < 797323d1cf92d09b7a017cfec576d9babf99cde7 | ≥ 5ec8e8ea8b7783fab150cf86404fc38cb4db8800, < adccdf702b4ea913ded5ff512239e382d7473b63 | ≥ 5ec8e8ea8b7783fab150cf86404fc38cb4db8800, < 82f0b6f041fad768c28b4ad05a683065412c226e | 3a01daace71b521563c38bbbf874e14c3e58adb7 | ≥ 5.10.210, < 5.10.222 | ≥ 5.15.149, < 5.15.163 | ≥ 6.1.76, < 6.1.100 | ≥ 6.6.15, < 6.6.41 | ≥ 6.7.3, < 6.8 | 6.8
  • linux_kernel≥ 5.10.219, < 5.10.222 | ≥ 5.15.149, < 5.15.163 | ≥ 6.1.76, < 6.1.100 | ≥ 6.6.15, < 6.6.41 | ≥ 6.8, < 6.9.10
Debian1 product
  • linux< 6.1.106-1 | < 6.9.10-1

3 vendors · 115 products

References

28 links
Show all 28 references