CVE-2026-31482
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)
s390/entry: Scrub r12 register on kernel entry
In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12 register on kernel entry Before commit f33f2d4c7c80 ("s390/bp: remove TIF_ISOLATE_BP"), all entry handlers loaded r12 with the current task pointer (lg %r12,__LC_CURRENT) for use by the BPENTER/BPEXIT macros. That commit removed TIF_ISOLATE_BP, dropping both the branch prediction macros and the r12 load, but did not add r12 to the register clearing sequence. Add the missing xgr %r12,%r12 to make the register scrub consistent across all entry points.
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) |
|---|---|---|---|---|---|
| f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780 | affected | git | a58d298a83a3a9b7ca99ded9d60a1e77231159ef | Unavailable | None listed |
| f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780 | affected | git | 95c899cd791803a5bf7b73e5994fbbe1cc1a9c36 | Unavailable | None listed |
| f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780 | affected | git | 7f4e3233faa8470dd0627bc49b2809f2bfebd909 | Unavailable | None listed |
| f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780 | affected | git | 99a8b420f3f0e162eb9c9c9253929d4d23f9bd30 | Unavailable | None listed |
| f33f2d4c7c80c641f6ca3dfe5e7dfe1f91543780 | affected | git | 0738d395aab8fae3b5a3ad3fc640630c91693c27 | 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) |
|---|---|---|---|---|---|
| 6.4 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.4 | Unavailable | None listed |
| 6.6.131 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.80 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.21 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.11 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |