CVE-2026-72110: bpf,fork: wipe ->bpf_storage before bailouts that access it
Vulnerability summary
CVE-2026-72110 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.2% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 18Timeline
- 15-08-2026PublishedVulnerability first disclosed.
- 16-10-2026Last modifiedVulnerability information updated.
Description
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 metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.17% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu157 products
- linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-38.38
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1014.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.187-1 | < 6.12.100-1 | < 7.1.5-1
Linux1 product
- linux≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < 7df67a4799067a59e6a2d53f8059a6be6e73e678 | ≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < aff686efd38728e06daf12417a0d7ed454ce4cff | ≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < c3fd6f28c7ce1142a3b23dbb840eaa4777de1d74 | ≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < 9cff220ddb65b022cc668bb652200742476e744c | ≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < c4f626ddf2350652ad2f79daf1f10847f3f6eabd | ≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < 43f0005f81b8ce3be962d653cde8db9022f1e9b0 | ≥ a10787e6d58c24b51e91c19c6d16c5da89fcaa4b, < 9b51a6155d14389876916726430da30eabb1d4ed | 5.13
3 vendors · 159 products
