udf: Do not bother merging very long extents
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
udf: Do not bother merging very long extents
When merging very long extents we try to push as much length as possible
to the first extent. However this is unnecessarily complicated and not
really worth the trouble. Furthermore there was a bug in the logic
resulting in corrupting extents in the file as syzbot reproducer shows.
So just don't bother with the merging of extents that are too long
together.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/3d20e3b768aff32112bdce8d3219d923ae75f9f1https://git.kernel.org/stable/c/53cafe1d6d8ef9f93318e5bfccc0d24f27d41cedhttps://git.kernel.org/stable/c/5d029799d381a9ee06209a222cae75f04c5d5304https://git.kernel.org/stable/c/7a965da79f2d22601f329cbfce588386b0847544https://git.kernel.org/stable/c/965982feb333aefa9256c0fe188b5f1b958aef63https://git.kernel.org/stable/c/9a8d602f0723586e668bae7e65c832ceb9bcc8bchttps://git.kernel.org/stable/c/adac9ac6d2e04ea0782b91a00ba10706002f3ec4https://git.kernel.org/stable/c/d52252a1de4cf96a34f722b0cd8902d8ff78eb57