CVE-2024-41055
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-41055
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-41055.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-41055
- Downstream
- Related
- Published
- 2024-07-29T15:15:13Z
- Modified
- 2025-08-09T20:01:28Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm: prevent derefencing NULL ptr in pfnsectionvalid()
Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memorysection->usage") changed pfnsectionvalid() to add a READONCE() call around "ms->usage" to fix a race with sectiondeactivate() where ms->usage can be cleared. The READONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.
- References
-
- https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982
- https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7
- https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e
- https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509
- https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63
- https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503