CVE-2023-53506
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/3d20e3b768aff32112bdce8d3219d923ae75f9f1Patch
- https://git.kernel.org/stable/c/53cafe1d6d8ef9f93318e5bfccc0d24f27d41cedPatch
- https://git.kernel.org/stable/c/5d029799d381a9ee06209a222cae75f04c5d5304Patch
- https://git.kernel.org/stable/c/7a965da79f2d22601f329cbfce588386b0847544Patch
- https://git.kernel.org/stable/c/965982feb333aefa9256c0fe188b5f1b958aef63Patch
- https://git.kernel.org/stable/c/9a8d602f0723586e668bae7e65c832ceb9bcc8bcPatch
- https://git.kernel.org/stable/c/adac9ac6d2e04ea0782b91a00ba10706002f3ec4Patch
- https://git.kernel.org/stable/c/d52252a1de4cf96a34f722b0cd8902d8ff78eb57Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.