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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-43010

bpf: Reject sleepable kprobe_multi programs at attach time

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 0dcac272540613d41c05e89679e4ddb978b612f1 to < 89327ed787746a7aa4db3c97f91d2e294228932baffected
  • 0dcac272540613d41c05e89679e4ddb978b612f1 to < d97b19fe5265f7901b2c862f88a4eb1b129a0b61affected
  • 0dcac272540613d41c05e89679e4ddb978b612f1 to < dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3affected
  • 0dcac272540613d41c05e89679e4ddb978b612f1 to < f952157e695fd434bdc05af63a703bb082a78717affected
  • 0dcac272540613d41c05e89679e4ddb978b612f1 to < eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8affected

Linux Linux

Default version status: affected

  • 5.18affected
  • 0 to < 5.18unaffected
  • 6.6.144 to ≤ 6.6.*unaffected
  • 6.12.95 to ≤ 6.12.*unaffected
  • 6.18.22 to ≤ 6.18.*unaffected
  • 6.19.12 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References