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TI-2023-29662 Aliases CVE-2023-53372GHSA-5p9g-wpq2-jmm7

sctp: fix a potential overflow in sctp_ifwdtsn_skip

Priority LOW 38CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · High
Fix status
Partial Red Hat: 8 fixed, 1 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: sctp: fix a potential overflow in sctp_ifwdtsn_skip Currently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only checks the pos against the end of the chunk. However, the data left for the last pos may be < sizeof(struct sctp_ifwdtsn_skip), and dereference it as struct sctp_ifwdtsn_skip may cause coverflow. This patch fixes it by checking the pos against "the end of the chunk - sizeof(struct sctp_ifwdtsn_skip)" in sctp_ifwdtsn_skip, similar to sctp_fwdtsn_skip.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00385 32nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.281, 5.4.241, 5.10.178 +4Red Hat: 5 advisoriesRed Hat: 8 fixed, 1 without a fix

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
LinuxLinux4.16 and later4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3Patch availableCNA
  • Linux VendorLinux Affected 4.16 and later Fixed in 4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.16 to before 4.19.281; 4.20 to before 5.4.241; 5.5 to before 5.10.178; 5.11 to before 5.15.108; 5.16 to before 6.1.25; 6.2 to before 6.2.12VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*6.3 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*6.3 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*6.3 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:*6.3 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:*6.3 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.3:rc6:*:*:*:*:*:*6.3 rc6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.16 to before 4.19.281; 4.20 to before 5.4.241; 5.5 to before 5.10.178; 5.11 to before 5.15.108; 5.16 to before 6.1.25; 6.2 to before 6.2.12 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:* Versions 6.3 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:* Versions 6.3 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:* Versions 6.3 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:* Versions 6.3 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:* Versions 6.3 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.3:rc6:*:*:*:*:*:* Versions 6.3 rc6 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3

Red Hat 5 advisories

  • RHSA-2026:26535 Released 2026-06-17 · Red Hat rating Critical
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.194.1.el8_4, kernel-4.18.0-305.194.1.el8_4, kernel-abi-stablelists-4.18.0-305.194.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.194.1.el8_4, kernel-4.18.0-305.194.1.el8_4, kernel-abi-stablelists-4.18.0-305.194.1.el8_4 +14
  • RHSA-2026:25533 Released 2026-06-12 · Red Hat rating Critical
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.195.1.el8_6, kernel-4.18.0-372.195.1.el8_6, kernel-abi-stablelists-4.18.0-372.195.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.195.1.el8_6, kernel-4.18.0-372.195.1.el8_6, kernel-abi-stablelists-4.18.0-372.195.1.el8_6 +14
  • RHSA-2024:0575 Released 2024-01-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.43.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.43.1.el8_8, kernel-4.18.0-477.43.1.el8_8, kernel-abi-stablelists-4.18.0-477.43.1.el8_8 +19
Show 2 more Red Hat advisories
  • RHSA-2023:7077 Released 2023-11-14 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-513.5.1.el8_9
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-513.5.1.el8_9, kernel-4.18.0-513.5.1.el8_9, kernel-abi-stablelists-4.18.0-513.5.1.el8_9 +19
  • RHSA-2023:6583 Released 2023-11-07 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-362.8.1.el9_3, libperf-5.14.0-362.8.1.el9_3
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-362.8.1.el9_3, kernel-64k-debug-devel-matched-5.14.0-362.8.1.el9_3, kernel-64k-devel-5.14.0-362.8.1.el9_3 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.2.0-362.8.1.el9_3, kernel-5.14.0-362.8.1.el9_3, kernel-64k-5.14.0-362.8.1.el9_3 +29
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-362.8.1.el9_3, kernel-rt-core-5.14.0-362.8.1.el9_3, kernel-rt-debug-5.14.0-362.8.1.el9_3 +9
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-362.8.1.el9_3, kernel-rt-core-5.14.0-362.8.1.el9_3, kernel-rt-debug-5.14.0-362.8.1.el9_3 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2023:7077
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:7077
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:26535
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:25533
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:0575
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:26535
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:25533
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-53372
  2. 2026-10-03 Alias added: GHSA-5p9g-wpq2-jmm7

References

Patch 7

  • 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