CVE-2022-48939
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-48939
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-48939.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2023:2458
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 5.16.12-1 |
| debian | bullseye | fixed | 5.10.103-1 |
| debian | forky | fixed | 5.16.12-1 |
| debian | sid | fixed | 5.16.12-1 |
| debian | trixie | fixed | 5.16.12-1 |
References
Verify integrity in audit chain (admin only). AS-IS.