bpf,fork: wipe ->bpf_storage before bailouts that access it
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.
CVE-2026-72110
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-72110
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "7df67a4799067a59e6a2d53f8059a6be6e73e678",
"versionType": "git"
},
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "aff686efd38728e06daf12417a0d7ed454ce4cff",
"versionType": "git"
},
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "c3fd6f28c7ce1142a3b23dbb840eaa4777de1d74",
"versionType": "git"
},
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "9cff220ddb65b022cc668bb652200742476e744c",
"versionType": "git"
},
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "c4f626ddf2350652ad2f79daf1f10847f3f6eabd",
"versionType": "git"
},
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "43f0005f81b8ce3be962d653cde8db9022f1e9b0",
"versionType": "git"
},
{
"status": "affected",
"version": "a10787e6d58c24b51e91c19c6d16c5da89fcaa4b",
"lessThan": "9b51a6155d14389876916726430da30eabb1d4ed",
"versionType": "git"
}
],
"programFiles": [
"kernel/fork.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.217",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/fork.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72110
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #32940 · Revision 1
- Added to Heist Feed
- Publisher date