CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
AI Score
Confidence
High
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux-intel-iotg-5.15 | < 5.15.0-1008.11~20.04.1 | UNKNOWN |
git.kernel.org/linus/75134f16e7dd0007aa474b281935c5f42e79f2c8 (5.17-rc6)
git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8
git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417
git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b
git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784
launchpad.net/bugs/cve/CVE-2022-48939
nvd.nist.gov/vuln/detail/CVE-2022-48939
security-tracker.debian.org/tracker/CVE-2022-48939
www.cve.org/CVERecord?id=CVE-2022-48939