Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucv_sock_setsockopt() and wrap the whole switch in lock_sock()/release_sock(). The pre-existing SO_MSGLIMIT-only lock becomes redundant and is removed. Any AF_IUCV HIPER user can potentially crash the kernel by racing recvmsg() with getsockopt(SO_MSGSIZE): the SO_MSGSIZE arm dereferences iucv->hs_dev->mtu after iucv_sock_close() (called from the racing recvmsg()) has set hs_dev to NULL, producing a NULL pointer dereference oops.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 51363b8751a673a00ad48eea895266396d53fa52 before 884eb247b74d86db97e3a37f0d6fc8e1e83590dd; affected 51363b8751a673a00ad48eea895266396d53fa52 before 45bb8de8c95d8899f4b8f61bd9bceb8132af73cb; affected 51363b8751a673a00ad48eea895266396d53fa52 before 1fc30bd4e55e2dd622d2d366cecd732c1841bbee; affected 51363b8751a673a00ad48eea895266396d53fa52 before cd691beafea0dd779e69e81ccc26b0ab50efcb5e; affected 51363b8751a673a00ad48eea895266396d53fa52 before 6e792b8dd3002bbc4136745928a9605df1a72b8a; affected 51363b8751a673a00ad48eea895266396d53fa52 before 9817369243380e287ebe5525411557eaa3aa2a79; affected 51363b8751a673a00ad48eea895266396d53fa52 before 69554adc7a6fa04ede3ad7512321d83748e3c920; affected 51363b8751a673a00ad48eea895266396d53fa52 before 3589d20a666caf30ad100c960a2de7de390fce88 |
| Linux / Linux | affected 3.4; unaffected 0 before 3.4; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/884eb247b74d86db97e3a37f0d6fc8e1e83590dd
- https://git.kernel.org/stable/c/45bb8de8c95d8899f4b8f61bd9bceb8132af73cb
- https://git.kernel.org/stable/c/1fc30bd4e55e2dd622d2d366cecd732c1841bbee
- https://git.kernel.org/stable/c/cd691beafea0dd779e69e81ccc26b0ab50efcb5e
- https://git.kernel.org/stable/c/6e792b8dd3002bbc4136745928a9605df1a72b8a
- https://git.kernel.org/stable/c/9817369243380e287ebe5525411557eaa3aa2a79
- https://git.kernel.org/stable/c/69554adc7a6fa04ede3ad7512321d83748e3c920
- https://git.kernel.org/stable/c/3589d20a666caf30ad100c960a2de7de390fce88
ADP enrichment
No English description supplied.
No references supplied.