CVE-2022-48939

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Source

https://cve.org/CVERecord?id=CVE-2022-48939

Import Source

JSON Data

https://api.osv.dev/v1/vulns/CVE-2022-48939

Downstream

Related

Published

2024-08-22T03:31:34Z

Modified

2026-08-12T03:51:39Z

Summary

bpf: Add schedule points in batch ops

Details

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.

Database specific

{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48939.json"
}

References

Affected packages

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5

Fixed

7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b

Fixed

8628f489b749a4f9767991631921dbe3fbcdc784

Fixed

7e8099967d0e3ff9d1ae043e80b27fbe46c08417

Fixed

75134f16e7dd0007aa474b281935c5f42e79f2c8

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48939.json"

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48939.json"