bpf: mark a NULL call argument precise
In the Linux kernel, the following vulnerability has been resolved: bpf: mark a NULL call argument precise check_func_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. check_helper_call() enforces second parameter of the bpf_get_local_storage() to be zero, w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Grouping these two into one patch, as they share the same fixes tag.
CVE-2026-98019
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-2026-98019
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": "b5dc0163d8fd78e64a7e21f309cf932fda34353e",
"lessThan": "febbb66e682d8328f7c5bcbdd5e4291abab2e858",
"versionType": "git"
},
{
"status": "affected",
"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e",
"lessThan": "627089c278df58749f25686c6a3caf7e181b5951",
"versionType": "git"
},
{
"status": "affected",
"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e",
"lessThan": "b1fe6379e401b8ce0f561cb4d84af2b70b4343c3",
"versionType": "git"
},
{
"status": "affected",
"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e",
"lessThan": "69a9ad004ccf5d45e534c7d503f47f643abe64b7",
"versionType": "git"
},
{
"status": "affected",
"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e",
"lessThan": "1a3a10b030c96ea88868ccc060a16827c01eaa5a",
"versionType": "git"
}
],
"programFiles": [
"kernel/bpf/verifier.c",
"tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/bpf/verifier.c",
"tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98019
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48828 · Revision 1
- Added to Heist Feed
- Publisher date