CVE-2022-48939
In the Linux kernel, the following vulnerability has been resolved: bpf: Add schedule points in batch ops syzbot reported various soft lockups caused by bpf batch operations.
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Add schedule points in batch ops syzbot reported various soft lockups caused by bpf batch operations. INFO: task kworker/1:1:27 blocked for more than 140 seconds. INFO: task hung in rcu_barrier Nothing prevents batch ops to process huge amount of data, we need to add schedule points in them. Note that maybe_wait_bpf_programs(map) calls from generic_map_delete_batch() can be factorized by moving the call after the loop. This will be done later in -next tree once we get this fix merged, unless there is strong opinion doing this optimization sooner.
- CVSS 3.1
- 3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-834
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8Patch
- https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417Patch
- https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12bPatch
- https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.