CVE-2024-50036

High

In the Linux kernel, the following vulnerability has been resolved: net: do not delay dst_entries_add() in dst_release() dst_entries_add() uses per-cpu data that might be freed at netns dismantle from ip6_route_net_exit() calling dst_entries_destroy() Before ip6_route_net_exit() can be called, we release all the dsts associated with this netns, via calls to dst_release(), which waits an rcu grace period before calling dst_destroy() dst_entries_add() use in dst_destroy() is racy, because dst_entries_destroy() could have been called already. Decrementing the number of dsts must happen sooner. Notes: 1) in CONFIG_XFRM case, dst_destroy() can call dst_release_immediate(child), this might also cause UAF if the child does not have DST_NOCOUNT set. IPSEC maintainers might take a look and see how to address this. 2) There is also discussion about removing this count of dst, which might happen in future kernels.

Package Linux Kernel
Published 2024-10-21
Last modified 2025-11-03
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

7.0

out of 10
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 3.10.50, 3.12.26, 3.14.14, 3.15.7, 3.16 and later are affected. Fixed in 5.10.230, 5.15.172, 6.1.117, 6.6.57, 6.11.4, 6.12 and their respective stable series.

Affected from
≥ 3.10.50 ≥ 3.12.26 ≥ 3.14.14 ≥ 3.15.7 ≥ 3.16
Fixed in
✓ 5.10.230 5.10.x ✓ 5.15.172 5.15.x ✓ 6.1.117 6.1.x ✓ 6.6.57 6.6.x ✓ 6.11.4 6.11.x ✓ 6.12

References

The following references provide additional information about CVE-2024-50036 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

6 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2024-50036?

    CVE-2024-50036 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10 . It affects Linux kernel versions from 3.10.50 onward and has been patched in 5.10.230, 5.15.172, 6.1.117 and others. CVE-2024-50036 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-50036?

    CVE-2024-50036 has a CVSS score of 7.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2024-50036?

    Yes — CVE-2024-50036 has been patched. Fixed versions include 5.10.230, 5.15.172, 6.1.117 and others. If you are running Linux kernel 3.10.50 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-50036 actively exploited?

    No — CVE-2024-50036 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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