md/raid10: fix leak of 'r10bio->remaining' for recovery
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
md/raid10: fix leak of 'r10bio->remaining' for recovery
raid10_sync_request() will add 'r10bio->remaining' for both rdev and
replacement rdev. However, if the read io fails, recovery_request_write()
returns without issuing the write io, in this case, end_sync_request()
is only called once and 'remaining' is leaked, cause an io hang.
Fix the problem by decreasing 'remaining' according to if 'bio' and
'repl_bio' is valid.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/11141630f03efffdfe260b3582b2d93d38171b97https://git.kernel.org/stable/c/1697fb124c6d6c5237e9cbd78890310154738084https://git.kernel.org/stable/c/1d2c6c6e37fe5de11fd01a82badf03390e12df7ahttps://git.kernel.org/stable/c/26208a7cffd0c7cbf14237ccd20c7270b3ffeb7ehttps://git.kernel.org/stable/c/3481dec5ecbbbbe44ab23e22c2b14bd65c644ec6https://git.kernel.org/stable/c/4f82e7e07cdaf2947d71968e3d6b73370a217093https://git.kernel.org/stable/c/8c5d5d7ffd1e76734811b8ea5417cf0432b9952chttps://git.kernel.org/stable/c/8d09065802c53cc938d162b62f6c4150b392c90ehttps://git.kernel.org/stable/c/cb827ed2bb34480dc102146d3a1f89fdbcafc028