CVE-2026-72110bpf,fork: wipe ->bpf_storage before bailouts that access it
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: bpf,fork: wipe ->bpf_storage before bailouts that access it Currently, copy_process() can bail out to free_task() before p->bpf_storage has been initialized, with this call graph (shown here for the !CONFIG_MEMCG case): copy_process dup_task_struct arch_dup_task_struct [copies the entire task_struct, including ->bpf_storage member] [RLIMIT_NPROC check fails] delayed_free_task free_task bpf_task_storage_free rcu_dereference(task->bpf_storage) bpf_local_storage_destroy In this case, the nascent task's ->bpf_storage member that bpf_local_storage_destroy() operates on is a plain copy of the parent's ->bpf_storage pointer, not a real initialized pointer. This leads to badness (kernel hangs, UAF). This is reachable as long as the process calling fork() has been inserted into a task storage map.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before 7df67a4799067a59e6a2d53f8059a6be6e73e678; from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before aff686efd38728e06daf12417a0d7ed454ce4cff; from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before c3fd6f28c7ce1142a3b23dbb840eaa4777de1d74; from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before 9cff220ddb65b022cc668bb652200742476e744c; from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before c4f626ddf2350652ad2f79daf1f10847f3f6eabd; from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before 43f0005f81b8ce3be962d653cde8db9022f1e9b0; from a10787e6d58c24b51e91c19c6d16c5da89fcaa4b before 9b51a6155d14389876916726430da30eabb1d4ed | CNA record |
References
- https://git.kernel.org/stable/c/7df67a4799067a59e6a2d53f8059a6be6e73e678
- https://git.kernel.org/stable/c/aff686efd38728e06daf12417a0d7ed454ce4cff
- https://git.kernel.org/stable/c/c3fd6f28c7ce1142a3b23dbb840eaa4777de1d74
- https://git.kernel.org/stable/c/9cff220ddb65b022cc668bb652200742476e744c
- https://git.kernel.org/stable/c/c4f626ddf2350652ad2f79daf1f10847f3f6eabd
- https://git.kernel.org/stable/c/43f0005f81b8ce3be962d653cde8db9022f1e9b0
- https://git.kernel.org/stable/c/9b51a6155d14389876916726430da30eabb1d4ed
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.