CVE-2022-50328
In the Linux kernel, the following vulnerability has been resolved: jbd2: fix potential use-after-free in jbd2_fc_wait_bufs In 'jbd2_fc_wait_bufs' use 'bh' after put buffer head reference count which may lead to use-after-free.
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: jbd2: fix potential use-after-free in jbd2_fc_wait_bufs In 'jbd2_fc_wait_bufs' use 'bh' after put buffer head reference count which may lead to use-after-free. So judge buffer if uptodate before put buffer head reference count.
- 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 · 5th 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/1d4d16daec2a6689b6d3fbfc7d2078643adc6619Patch
- https://git.kernel.org/stable/c/243d1a5d505d0b0460c9af0ad56ed4a56ef0bebdPatch
- https://git.kernel.org/stable/c/2e6d9f381c1ed844531a577783fc352de7a44c8aPatch
- https://git.kernel.org/stable/c/d11d2ded293976a1a0d9d9471827a44dc9e3c63fPatch
- https://git.kernel.org/stable/c/effd9b3c029ecdd853a11933dcf857f5a7ca8c3dPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.