filemap: Fix bounds checking in filemap_read()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
filemap: Fix bounds checking in filemap_read()
If the caller supplies an iocb->ki_pos value that is close to the
filesystem upper limit, and an iterator with a count that causes us to
overflow that limit, then filemap_read() enters an infinite loop.
This behaviour was discovered when testing xfstests generic/525 with the
"localio" optimisation for loopback NFS mounts.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/26530b757c81f1389fb33ae0357500150933161bhttps://git.kernel.org/stable/c/6450e73f4c86d481ac2e22e1bc848d346e140826https://git.kernel.org/stable/c/6cc52df69e8464811f9f6fc12f7aaa78451eb0b8https://git.kernel.org/stable/c/a2746ab3bbc9c6408da5cd072653ec8c24749235https://git.kernel.org/stable/c/ace149e0830c380ddfce7e466fe860ca502fe4eehttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.html