CVE-2026-43010 (GCVE-0-2026-43010)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-07-04 11:50
VLAI
Title
bpf: Reject sleepable kprobe_multi programs at attach time
Summary
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, bpf_kprobe_multi_link_attach() did not validate whether the program being attached had the sleepable flag set, allowing sleepable helpers such as bpf_copy_from_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 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1787, name: sudo preempt_count: 1, expected: 0 RCU nest depth: 2, expected: 0 Fix this by rejecting sleepable programs early in bpf_kprobe_multi_link_attach(), before any further processing.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0dcac272540613d41c05e89679e4ddb978b612f1 , < 89327ed787746a7aa4db3c97f91d2e294228932b (git)
Affected: 0dcac272540613d41c05e89679e4ddb978b612f1 , < d97b19fe5265f7901b2c862f88a4eb1b129a0b61 (git)
Affected: 0dcac272540613d41c05e89679e4ddb978b612f1 , < dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3 (git)
Affected: 0dcac272540613d41c05e89679e4ddb978b612f1 , < f952157e695fd434bdc05af63a703bb082a78717 (git)
Affected: 0dcac272540613d41c05e89679e4ddb978b612f1 , < eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8 (git)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.95 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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}



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