CVE-2026-89765
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)
timers/itimer: Zero-init old itimerval before copy to userspace
In the Linux kernel, the following vulnerability has been resolved: timers/itimer: Zero-init old itimerval before copy to userspace On native sparc64, struct __kernel_old_timeval contains a four-byte hole after tv_usec because tv_sec is 64-bit while __kernel_suseconds_t is 32-bit. put_itimerval() fills only the named fields in a stack-allocated __kernel_old_itimerval and copies the entire object to userspace, so getitimer() can expose the two padding holes. Zero-initialize the aggregate before assigning the fields so implicit padding is deterministic before it crosses the user/kernel boundary.
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) |
|---|---|---|---|---|---|
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | 6d4b937251386d9c6f968e7802f0cb16a8523772 | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | 4ea70146ab9376092297eb8b622ef1792797f2cf | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | a17b345daff46fec4af9f1ecbdf350208016dd15 | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | bdfda99c5763822a9a888e8af0ad7d9312ffcfe2 | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | 4c66719dd1e4023c5e3f7d050f1bbefec3dfbeb4 | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | 2bf5e8f7c9bf4ad3be343a9a6e3e50a34264d25e | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | 00ef529a5402f41eb1d227916437e237450719f9 | Unavailable | None listed |
| 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 | affected | git | 18c7d85864e554adc8fad1e8d2e9d2cb6c3911c8 | 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) |
|---|---|---|---|---|---|
| 2.6.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.12 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |