CVE-2024-49944

sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start

MEDIUM

5.5

CVSS Score

Published: October 21, 2024 at 06:02 PM UTC

Updated: October 15, 2026 at 01:19 AM UTC

12 products affected across 2 vendorsLinux KernelSIMATIC S7-1500 TM MFPRUGGEDCOM RST2428P Firmware

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start In sctp_listen_start() invoked by sctp_inet_listen(), it should set the sk_state back to CLOSED if sctp_autobind() fails due to whatever reason. Otherwise, next time when calling sctp_inet_listen(), if sctp_sk(sk)->reuse is already set via setsockopt(SCTP_REUSE_PORT), sctp_sk(sk)->bind_hash will be dereferenced as sk_state is LISTENING, which causes a crash as bind_hash is NULL. KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:sctp_inet_listen+0x7f0/0xa20 net/sctp/socket.c:8617 Call Trace: <TASK> __sys_listen_socket net/socket.c:1883 [inline] __sys_listen+0x1b7/0x230 net/socket.c:1894 __do_sys_listen net/socket.c:1902 [inline]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.30 ≤ v < 5.10.2275.11 ≤ v < 5.15.1685.16 ≤ v < 6.1.1136.11 ≤ v < 6.11.36.2 ≤ v < 6.6.556.7 ≤ v < 6.10.145e8f3f703ae4e4af65e2695e486b3cd1983288636.12 6.12 rc1

Vendor states this is fixed in 0e4e2e60556c6ed00e8450b720f106a268d23062 (fixed)

Vendor states this is fixed in 7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7 (fixed)

Vendor states this is fixed in 89bbead9d897c77d0b566349c8643030ff2abeba (fixed)

Vendor states this is fixed in 8beee4d8dee76b67c75dc91fd8185d91e845c160 (fixed)

Vendor states this is fixed in 9230a59eda0878d7ecaa901d876aec76f57bd455 (fixed)

Vendor states this is fixed in dd70c8a89ef99c3d53127fe19e51ef47c3f860fa (fixed)

Vendor states this is fixed in e7a8442195e8ebd97df467ce4742980ab57edcce (fixed)

Vendor states this is fixed in e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5 (fixed)

Vendor states this is fixed in f032e1dac30b3376c7d6026fb01a8c403c47a80d (fixed)

Vendor states this is fixed in 2.6.30 (unaffected)

Vendor states this is fixed in 4.19.323 (unaffected)

Vendor states this is fixed in 5.10.227 (unaffected)

Vendor states this is fixed in 5.15.168 (unaffected)

Vendor states this is fixed in 5.4.285 (unaffected)

Vendor states this is fixed in 6.1.113 (unaffected)

Vendor states this is fixed in 6.10.14 (unaffected)

Vendor states this is fixed in 6.11.3 (unaffected)

Vendor states this is fixed in 6.12 (unaffected)

Vendor states this is fixed in 6.6.55 (unaffected)

RUGGEDCOM RST2428P Firmware · Siemens

60%

v < V3.2