CVE-2026-64082
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)
riscv: Fix register corruption from uninitialized cregs on error
In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compat_riscv_gpr_set() calls cregs_to_regs() unconditionally, even when user_regset_copyin() fails. Since cregs is an uninitialized stack variable, a copyin failure causes uninitialized stack data to be written into the target task's pt_regs, corrupting its register state and potentially leaking kernel stack contents. compat_restore_sigcontext() has the same issue: it calls cregs_to_regs() even when __copy_from_user() fails, leading to the same corruption of the signal-returning task's register state on error. Only call cregs_to_regs() when the user copy succeeds.
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) |
|---|---|---|---|---|---|
| 7383ee05314be58f8f9f018ee0ac53bef3808aea | affected | git | f2d88b0d7aebfa4643fc58bbae57210c6daff9c6 | Unavailable | None listed |
| 7383ee05314be58f8f9f018ee0ac53bef3808aea | affected | git | 66dedb6028c3df6c6a3372dd935b823917e150d5 | Unavailable | None listed |
| 7383ee05314be58f8f9f018ee0ac53bef3808aea | affected | git | 2a7d1daf2674fe7d5b1cc99a4e3b5f0f72d5958f | Unavailable | None listed |
| 7383ee05314be58f8f9f018ee0ac53bef3808aea | affected | git | 0599aa23734c48de9bce36d043a9ec90c23945a1 | Unavailable | None listed |
| 7383ee05314be58f8f9f018ee0ac53bef3808aea | affected | git | 9e020156833f1ad0d425a1e3d85b65639f1c1c50 | Unavailable | None listed |
| 7383ee05314be58f8f9f018ee0ac53bef3808aea | affected | git | 6ebcbb53fc9bc30843054ed99fd60b8e542628f4 | 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) |
|---|---|---|---|---|---|
| 5.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.19 | Unavailable | None listed |
| 6.1.187 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.156 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.108 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.49 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.11 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |