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TI-2024-33481 Aliases CVE-2024-50036GHSA-5v92-qmvx-fgv4

net: do not delay dst_entries_add() in dst_release()

Priority LOW 34Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00247 16th percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.11, 3.13, 3.15 +7Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux3.10.50 to before 3.11; 3.12.26 to before 3.13; 3.14.14 to before 3.15; 3.15.7 to before 3.163.11, 3.13, 3.15, 3.16Patch availableCNA
LinuxLinux3.16 and later5.10.230, 5.15.172, 6.1.117, 6.6.57, 6.11.4, 6.12Patch availableCNA
  • Linux VendorLinux Affected 3.10.50 to before 3.11; 3.12.26 to before 3.13; 3.14.14 to before 3.15; 3.15.7 to before 3.16 Fixed in 3.11, 3.13, 3.15, 3.16 Patch available CNA
  • Linux VendorLinux Affected 3.16 and later Fixed in 5.10.230, 5.15.172, 6.1.117, 6.6.57, 6.11.4, 6.12 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.10.50 to before 3.11; 3.12.26 to before 3.13; 3.14.14 to before 3.15; 3.15.7 to before 3.16; 3.16 to before 6.6.57; 6.7 to before 6.11.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*6.12 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*6.12 rc2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.10.50 to before 3.11; 3.12.26 to before 3.13; 3.14.14 to before 3.15; 3.15.7 to before 3.16; 3.16 to before 6.6.57; 6.7 to before 6.11.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* Versions 6.12 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* Versions 6.12 rc2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 3.11, 3.13, 3.15, 3.16
  • Fix · CNA Linux (Linux) Fixed in 5.10.230, 5.15.172, 6.1.117, 6.6.57, 6.11.4, 6.12

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-50036
  2. 2026-10-03 Alias added: GHSA-5v92-qmvx-fgv4

References

Patch 3

Other 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences