Medium 5.5Published Oct 21, 2024

CVE-2024-49944sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start

Updated under an hour ago (Oct 27, 2026, 10:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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]

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before 89bbead9d897c77d0b566349c8643030ff2abeba; 5e8f3f703ae4e4af65e2695e486b3cd198328863 builds before 0e4e2e60556c6ed00e8450b720f106a268d23062; from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before dd70c8a89ef99c3d53127fe19e51ef47c3f860fa; from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before e7a8442195e8ebd97df467ce4742980ab57edcce; from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before 9230a59eda0878d7ecaa901d876aec76f57bd455; from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before 7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7; from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before f032e1dac30b3376c7d6026fb01a8c403c47a80d; from 5e8f3f703ae4e4af65e2695e486b3cd198328863 before e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5; and 1 more ranges	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.2	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.30 before 5.10.227; from 5.11 before 5.15.168; from 5.16 before 6.1.113; from 6.2 before 6.6.55; from 6.7 before 6.10.14; from 6.11 before 6.11.3; 6.12	NVD

References

References

https://git.kernel.org/stable/c/89bbead9d897c77d0b566349c8643030ff2abeba	patch
https://git.kernel.org/stable/c/0e4e2e60556c6ed00e8450b720f106a268d23062	patch
https://git.kernel.org/stable/c/dd70c8a89ef99c3d53127fe19e51ef47c3f860fa	patch
https://git.kernel.org/stable/c/e7a8442195e8ebd97df467ce4742980ab57edcce	patch
https://git.kernel.org/stable/c/9230a59eda0878d7ecaa901d876aec76f57bd455	patch
https://git.kernel.org/stable/c/7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7	patch
https://git.kernel.org/stable/c/f032e1dac30b3376c7d6026fb01a8c403c47a80d	patch
https://git.kernel.org/stable/c/e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5	patch
https://git.kernel.org/stable/c/8beee4d8dee76b67c75dc91fd8185d91e845c160	patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.