CVE-2026-80670
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
perf tools: Use perf_env__get_cpu_topology() in machine__resolve()
In the Linux kernel, the following vulnerability has been resolved: perf tools: Use perf_env__get_cpu_topology() in machine__resolve() machine__resolve() accesses env->cpu[al->cpu].socket_id after checking al->cpu >= 0 and env->cpu != NULL, but without validating al->cpu against env->nr_cpus_avail. Since al->cpu comes from the untrusted perf.data sample, a crafted file with a large CPU index causes an out-of-bounds heap read. Use perf_env__get_cpu_topology() which validates both NULL and bounds. Also bounds-check al->cpu before the cast to struct perf_cpu (int16_t): without this, values like 65536 silently truncate to 0, bypassing the accessor's internal check and returning CPU 0's topology.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0c4c4debb0adda4c18c158d95031dc2b9f637869 | affected | git | b9e8406651dcc1c19238aad11861a758683525b4 | Unavailable | None listed |
| 0c4c4debb0adda4c18c158d95031dc2b9f637869 | affected | git | eb266a14c16a93eb4db7b56a452d6be93f8bdcd4 | Unavailable | None listed |
| 0c4c4debb0adda4c18c158d95031dc2b9f637869 | affected | git | 5484b43a0ec8231c36fba6ead654cb72dbba8b8f | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.4 | Unavailable | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |