Answer in brief
CVE-2026-43010 records a Medium severity (CVSS 5.5) vulnerability in bpf: Reject sleepable kprobe_multi programs at attach time. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0dcac272540613d41c05e89679e4ddb978b612f1 <c2b5e13dee9cc83e664daf4c13077dcc618a44e9 || >=0dcac272540613d41c05e89679e4ddb978b612f1 <89327ed787746a7aa4db3c97f91d2e294228932b || >=0dcac272540613d41c05e89679e4ddb978b612f1 <d97b19fe5265f7901b2c862f88a4eb1b129a0b61 || >=0dcac272540613d41c05e89679e4ddb978b612f1 <dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3 || >=0dcac272540613d41c05e89679e4ddb978b612f1 <f952157e695fd434bdc05af63a703bb082a78717 || >=0dcac272540613d41c05e89679e4ddb978b612f1 <eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8 | c2b5e13dee9cc83e664daf4c13077dcc618a44e9, 89327ed787746a7aa4db3c97f91d2e294228932b, d97b19fe5265f7901b2c862f88a4eb1b129a0b61, dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3, f952157e695fd434bdc05af63a703bb082a78717, eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8 |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
May 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 30, 2026
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.
Quoted source text, attributed separately from HOL analysis.