CVE-2024-38667
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
riscv: prevent pt_regs corruption for secondary idle threads
In the Linux kernel, the following vulnerability has been resolved: riscv: prevent pt_regs corruption for secondary idle threads Top of the kernel thread stack should be reserved for pt_regs. However this is not the case for the idle threads of the secondary boot harts. Their stacks overlap with their pt_regs, so both may get corrupted. Similar issue has been fixed for the primary hart, see c7cdd96eca28 ("riscv: prevent stack corruption by reserving task_pt_regs(p) early"). However that fix was not propagated to the secondary harts. The problem has been noticed in some CPU hotplug tests with V enabled. The function smp_callin stored several registers on stack, corrupting top of pt_regs structure including status field. As a result, kernel attempted to save or restore inexistent V context.
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) |
|---|---|---|---|---|---|
| 2875fe0561569f82d0e63658ccf0d11ce7da8922 | affected | git | ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e | Unavailable | None listed |
| 2875fe0561569f82d0e63658ccf0d11ce7da8922 | affected | git | 3090c06d50eaa91317f84bf3eac4c265e6cb8d44 | Unavailable | None listed |
| 2875fe0561569f82d0e63658ccf0d11ce7da8922 | affected | git | 0c1f28c32a194303da630fca89481334b9547b80 | Unavailable | None listed |
| 2875fe0561569f82d0e63658ccf0d11ce7da8922 | affected | git | a638b0461b58aa3205cd9d5f14d6f703d795b4af | 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) |
|---|---|---|---|---|---|
| 5.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.7 | Unavailable | None listed |
| 6.1.93 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.33 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.9.4 | unaffected | semver | Unavailable | 6.9.* | None listed |
| 6.10 | unaffected | original_commit_for_fix | Unavailable | * | None listed |