Read the docs
TI-2024-35675 Aliases CVE-2024-53206GHSA-hx9w-rm9x-mqpr

tcp: Fix use-after-free of nreq in reqsk_timer_handler().

Priority MEDIUM 44CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix use-after-free of nreq in reqsk_timer_handler(). The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with __inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler(). Then, oreq should be passed to reqsk_put() instead of req; otherwise use-after-free of nreq could happen when reqsk is migrated but the retry attempt failed (e.g. due to timeout). Let's pass oreq to reqsk_put().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00633 50th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.174, 6.1.120, 6.6.64 +5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.15.170 to before 5.15.174; 6.1.115 to before 6.1.120; 6.6.59 to before 6.6.64; 6.11.6 to before 6.11.11; 5.4.293 to before 5.5; 5.10.237 to before 5.115.15.174, 6.1.120, 6.6.64, 6.11.11, 5.5, 5.11Patch availableCNA
LinuxLinux6.12 and later5.15.174, 6.1.120, 6.6.64, 6.11.11, 6.12.2, 6.13Patch availableCNA
  • Linux VendorLinux Affected 5.15.170 to before 5.15.174; 6.1.115 to before 6.1.120; 6.6.59 to before 6.6.64; 6.11.6 to before 6.11.11; 5.4.293 to before 5.5; 5.10.237 to before 5.11 Fixed in 5.15.174, 6.1.120, 6.6.64, 6.11.11, 5.5, 5.11 Patch available CNA
  • Linux VendorLinux Affected 6.12 and later Fixed in 5.15.174, 6.1.120, 6.6.64, 6.11.11, 6.12.2, 6.13 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.15.170 to before 5.15.174; 6.1.115 to before 6.1.120; 6.6.59 to before 6.6.64; 6.11.6 to before 6.11.11; 6.12 to before 6.12.2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.170 to before 5.15.174; 6.1.115 to before 6.1.120; 6.6.59 to before 6.6.64; 6.11.6 to before 6.11.11; 6.12 to before 6.12.2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.174, 6.1.120, 6.6.64, 6.11.11, 5.5, 5.11
  • Fix · CNA Linux (Linux) Fixed in 5.15.174, 6.1.120, 6.6.64, 6.11.11, 6.12.2, 6.13

Vendor assessments

Red Hat

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

Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-53206
  2. 2026-10-03 Alias added: GHSA-hx9w-rm9x-mqpr
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Patch 6

  • 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