Description
In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decode_choose_args() A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain choose_args that get decoded in decode_choose_args(). In this function, num_choose_arg_maps is read from the message, and a corresponding number of crush_choose_arg_maps gets decoded afterwards. Each crush_choose_arg_map has a choose_args_index, which serves as the key when inserting it into the choose_args rbtree of the decoded crush_map. If a (potentially corrupted) message contains two crush_choose_arg_maps with the same index, the assertion in insert_choose_arg_map() triggers a kernel BUG when trying to insert the second crush_choose_arg_map. This patch fixes the issue by switching to the non-asserting rbtree insertion function and rejecting the message if the insertion fails. [ idryomov: changelog ]
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
5cf9c4a9959b6273675310d14a834ef14fbca37c to < c7bf7864e2924fa5508ac270b0e9364bc13d5a6caffected5cf9c4a9959b6273675310d14a834ef14fbca37c to < f47430fc1f815e87406e2d3b4e476eff1bc7fd9baffected5cf9c4a9959b6273675310d14a834ef14fbca37c to < 0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9daaffected5cf9c4a9959b6273675310d14a834ef14fbca37c to < 534ebc08df97c47d4c7596f336fa31ecbf91519caffected5cf9c4a9959b6273675310d14a834ef14fbca37c to < 80c73bd1b2b04355d1d0c29be8ccbd25a380905daffected5cf9c4a9959b6273675310d14a834ef14fbca37c to < 4d2b37abda9536808655830d683dc491d31741a8affected5cf9c4a9959b6273675310d14a834ef14fbca37c to < 0a1265a9ab875f92b6a3ffb497404f46cf9d76a3affected5cf9c4a9959b6273675310d14a834ef14fbca37c to < d289478cfc0bcf81c7914200d6abdcb78bd04dedaffected
Linux Linux
Default version status: affected
4.13affected0 to < 4.13unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.141 to ≤ 6.6.*unaffected6.12.91 to ≤ 6.12.*unaffected6.18.33 to ≤ 6.18.*unaffected7.0.10 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c7bf7864e2924fa5508ac270b0e9364bc13d5a6c ↗
- https://git.kernel.org/stable/c/f47430fc1f815e87406e2d3b4e476eff1bc7fd9b ↗
- https://git.kernel.org/stable/c/0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da ↗
- https://git.kernel.org/stable/c/534ebc08df97c47d4c7596f336fa31ecbf91519c ↗
- https://git.kernel.org/stable/c/80c73bd1b2b04355d1d0c29be8ccbd25a380905d ↗
- https://git.kernel.org/stable/c/4d2b37abda9536808655830d683dc491d31741a8 ↗
- https://git.kernel.org/stable/c/0a1265a9ab875f92b6a3ffb497404f46cf9d76a3 ↗
- https://git.kernel.org/stable/c/d289478cfc0bcf81c7914200d6abdcb78bd04ded ↗