CVE-2022-48747
In the Linux kernel, the following vulnerability has been resolved: block: Fix wrong offset in bio_truncate() bio_truncate() clears the buffer outside of last block of bdev, however current bio_truncate() is using the wrong offset of page.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.92%). 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: block: Fix wrong offset in bio_truncate() bio_truncate() clears the buffer outside of last block of bdev, however current bio_truncate() is using the wrong offset of page. So it can return the uninitialized data. This happened when both of truncated/corrupted FS and userspace (via bdev) are trying to read the last of bdev.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.92% probability · 58th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-908
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/3ee859e384d453d6ac68bfd5971f630d9fa46ad3Patch
- https://git.kernel.org/stable/c/4633a79ff8bc82770486a063a08b55e5162521d8Patch
- https://git.kernel.org/stable/c/6cbf4c731d7812518cd857c2cfc3da9fd120f6aePatch
- https://git.kernel.org/stable/c/941d5180c430ce5b0f7a3622ef9b76077bfa3d82Patch
- https://git.kernel.org/stable/c/b63e120189fd92aff00096d11e2fc5253f60248bPatch
- https://git.kernel.org/stable/c/3ee859e384d453d6ac68bfd5971f630d9fa46ad3Patch
- https://git.kernel.org/stable/c/4633a79ff8bc82770486a063a08b55e5162521d8Patch
- https://git.kernel.org/stable/c/6cbf4c731d7812518cd857c2cfc3da9fd120f6aePatch
- https://git.kernel.org/stable/c/941d5180c430ce5b0f7a3622ef9b76077bfa3d82Patch
- https://git.kernel.org/stable/c/b63e120189fd92aff00096d11e2fc5253f60248bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.