CVE-2022-50245
In the Linux kernel, the following vulnerability has been resolved: rapidio: fix possible UAF when kfifo_alloc() fails If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). 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: rapidio: fix possible UAF when kfifo_alloc() fails If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv. But priv is still in the chdev->file_list, then list traversal may cause UAF. This fixes the following smatch warning: drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list
- 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
- 0.17% probability · 6th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/02d7d89f816951e0862147d751b1150d67aaebddPatch
- https://git.kernel.org/stable/c/2a6c75adf8192f07ddcdd4a1a13488c890a73919Patch
- https://git.kernel.org/stable/c/2ba06e57f933f0eac242e8b389433da1cc00d4d5Patch
- https://git.kernel.org/stable/c/2dfd60724d271a6ab99f93f40f38f2ced1ddbb87Patch
- https://git.kernel.org/stable/c/2f5cc7fd73fd6253cc71214f0dd499cc62feb469Patch
- https://git.kernel.org/stable/c/311b488405ac45af46756b1c8f1d27007b68b07ePatch
- https://git.kernel.org/stable/c/5ee850645e42f541ce1ea8130c2b27cc495f965cPatch
- https://git.kernel.org/stable/c/a253dde0403a153075ffb254f6f7b2635e49e97aPatch
- https://git.kernel.org/stable/c/cb87af2c19c0993f6e21f75b963a5599c5a73e76Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.