AZL-85395
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-85395.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-85395
- Upstream
- Published
- 2026-05-01T15:16:44Z
- Modified
- 2026-08-30T05:26:50Z
- Summary
- CVE-2026-43010 affecting package kernel for versions less than 6.6.144.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: Reject sleepable kprobe_multi programs at attach time
kprobe.multi programs run in atomic/RCU context and cannot sleep. However, bpfkprobemultilinkattach() did not validate whether the program being attached had the sleepable flag set, allowing sleepable helpers such as bpfcopyfrom_user() to be invoked from a non-sleepable context.
This causes a "sleeping function called from invalid context" splat:
BUG: sleeping function called from invalid context at ./include/linux/uaccess.h:169 inatomic(): 1, irqsdisabled(): 0, nonblock: 0, pid: 1787, name: sudo preemptcount: 1, expected: 0 RCU nest depth: 2, expected: 0
Fix this by rejecting sleepable programs early in bpfkprobemultilinkattach(), before any further processing.
- References