CVE-2026-46259
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)
procfs: fix missing RCU protection when reading real_parent in do_task_stat()
In the Linux kernel, the following vulnerability has been resolved: procfs: fix missing RCU protection when reading real_parent in do_task_stat() When reading /proc/[pid]/stat, do_task_stat() accesses task->real_parent without proper RCU protection, which leads to: cpu 0 cpu 1 ----- ----- do_task_stat var = task->real_parent release_task call_rcu(delayed_put_task_struct) task_tgid_nr_ns(var) rcu_read_lock <--- Too late to protect task->real_parent! task_pid_ptr <--- UAF! rcu_read_unlock This patch uses task_ppid_nr_ns() instead of task_tgid_nr_ns() to add proper RCU protection for accessing task->real_parent.
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) |
|---|---|---|---|---|---|
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | fefa0fcd78be465b7ad4c497fa6ec90d64194c04 | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | c93a33f28f915d446eea6fb3f0e1def0b3af1982 | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | 1c8dc5b5517546c68ffae40b948336122bb61306 | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | 0e64bd46a04a4fd61279aca9f53a664e9e5f7e7e | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | 73ec7c96601d61d52310c659145bb06d933a0fa6 | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | 4f9ae386861e280b7631ca252f798d25575627ee | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | dd8b13cb4ff1a4545a214ed897fdf2bc341155b6 | Unavailable | None listed |
| 06fffb1267c9d986687b69d74a46ee332a50575e | affected | git | 76149d53502cf17ef3ae454ff384551236fba867 | 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) |
|---|---|---|---|---|---|
| 2.6.26 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.26 | Unavailable | None listed |
| 5.10.252 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.202 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.165 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.128 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.75 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.14 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.4 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |