CVE-2022-48939
bpf: Add schedule points in batch ops
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Low3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.3.
Weakness
Affected products
- affected cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 – < 7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b
- affected cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 – < 8628f489b749a4f9767991631921dbe3fbcdc784
- affected cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 – < 7e8099967d0e3ff9d1ae043e80b27fbe46c08417
- affected cb4d03ab499d4c040f4ab6fd4389d2b49f42b5a5 – < 75134f16e7dd0007aa474b281935c5f42e79f2c8
- affected 5.6
- unaffected < 5.6
- unaffected 5.10.103 – ≤ 5.10.*
- unaffected 5.15.26 – ≤ 5.15.*
- unaffected 5.16.12 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (4)
- https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b (opens in a new tab)
- https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784 (opens in a new tab)
- https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417 (opens in a new tab)
- https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-48939)Record last updated .