جزئیات آسیب‌پذیری
CVE-2026-52973
futex: Drop CLONE_THREAD requirement for private default hash alloc
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: futex: Drop CLONE_THREAD requirement for private default hash alloc Currently need_futex_hash_allocate_default() depends on strict pthread semantics, abusing CLONE_THREAD. This breaks the non-concurrency assumptions when doing the mm->futex_ref pcpu allocations, leading to bugs[0] when sharing the mm in other ways; ie: BUG: KASAN: slab-use-after-free in futex_hash_put ... where the +1 bias can end up on a percpu counter that mm->futex_ref no longer points at. Loosen the check to cover any CLONE_VM clone, except vfork(). Excluding vfork keeps the existing paths untouched (no overhead), and we can't race in the first place: either the parent is suspended and the child runs alone, or mm->futex_ref is already allocated from an earlier CLONE_VM.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 7.8بالا | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 7.0بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| Linux | Linux | 6.17 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | d9b05321e21e4b218de4ce8a590bf375f58b6346 ≤ v < 1dcd36420af2da5bd59306dba9caf78e3d248b1d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | d9b05321e21e4b218de4ce8a590bf375f58b6346 ≤ v < 974ac49a9a068b0591a59f65c63eb06579a13091 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | d9b05321e21e4b218de4ce8a590bf375f58b6346 ≤ v < ee9dce44362b2d8132c32964656ab6dff7dfbc6a | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 9 | همه | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۱۰- https://git.kernel.org/stable/c/1dcd36420af2da5bd59306dba9caf78e3d248b1d
- https://git.kernel.org/stable/c/974ac49a9a068b0591a59f65c63eb06579a13091
- https://git.kernel.org/stable/c/ee9dce44362b2d8132c32964656ab6dff7dfbc6a
- https://access.redhat.com/security/cve/CVE-2026-52973 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2492413 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52973.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:45114 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:47040 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:62642 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:62640 vendor-advisoryx_refsource_REDHAT
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۴/۰۳
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۷/۲۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-825Expired Pointer Dereference