Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
51363b8751a673a00ad48eea895266396d53fa52 to < 884eb247b74d86db97e3a37f0d6fc8e1e83590ddaffected51363b8751a673a00ad48eea895266396d53fa52 to < 45bb8de8c95d8899f4b8f61bd9bceb8132af73cbaffected51363b8751a673a00ad48eea895266396d53fa52 to < 1fc30bd4e55e2dd622d2d366cecd732c1841bbeeaffected51363b8751a673a00ad48eea895266396d53fa52 to < cd691beafea0dd779e69e81ccc26b0ab50efcb5eaffected51363b8751a673a00ad48eea895266396d53fa52 to < 6e792b8dd3002bbc4136745928a9605df1a72b8aaffected51363b8751a673a00ad48eea895266396d53fa52 to < 9817369243380e287ebe5525411557eaa3aa2a79affected51363b8751a673a00ad48eea895266396d53fa52 to < 69554adc7a6fa04ede3ad7512321d83748e3c920affected51363b8751a673a00ad48eea895266396d53fa52 to < 3589d20a666caf30ad100c960a2de7de390fce88affected
Linux Linux
Default version status: affected
3.4affected0 to < 3.4unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.93 to ≤ 6.12.*unaffected6.18.35 to ≤ 6.18.*unaffected7.0.12 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
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 ↗