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THREATINT
PUBLISHED

CVE-2024-49944

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



AssignerLinux
Reserved2024-10-21
Published2024-10-21
Updated2024-10-22

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]

Product status

Default status
unaffected

5e8f3f703ae4 before dd70c8a89ef9
affected

5e8f3f703ae4 before e7a8442195e8
affected

5e8f3f703ae4 before 9230a59eda08
affected

5e8f3f703ae4 before 7f64cb5b4d8c
affected

5e8f3f703ae4 before f032e1dac30b
affected

5e8f3f703ae4 before e914bf68dab8
affected

5e8f3f703ae4 before 8beee4d8dee7
affected

Default status
affected

2.6.30
affected

Any version before 2.6.30
unaffected

5.10.227
unaffected

5.15.168
unaffected

6.1.113
unaffected

6.6.55
unaffected

6.10.14
unaffected

6.11.3
unaffected

6.12-rc2
unaffected

References

https://git.kernel.org/stable/c/dd70c8a89ef99c3d53127fe19e51ef47c3f860fa

https://git.kernel.org/stable/c/e7a8442195e8ebd97df467ce4742980ab57edcce

https://git.kernel.org/stable/c/9230a59eda0878d7ecaa901d876aec76f57bd455

https://git.kernel.org/stable/c/7f64cb5b4d8c872296eda0fdce3bcf099eec7aa7

https://git.kernel.org/stable/c/f032e1dac30b3376c7d6026fb01a8c403c47a80d

https://git.kernel.org/stable/c/e914bf68dab88815a7ae7b7a3a5e8913c8ff14a5

https://git.kernel.org/stable/c/8beee4d8dee76b67c75dc91fd8185d91e845c160

cve.org CVE-2024-49944

nvd.nist.gov CVE-2024-49944

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