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NVD / CVE Program· CNA Linux

CVE-2022-50812: security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.23% (FIRST EPSS).
  • Fixed version: Linux Linux 0b202dfedb5aa2e7d07d849be33fa3a48c026926, 21ca0bfa11bbb9a9207f5d2104f47d3d71b4616e, 8a4236456a3a402f6bb92aa7b75e7a3b4ef7a72c.

Low priority for now. Upgrade to Linux Linux 0b202dfedb5aa2e7d07d849be33fa3a48c026926, 21ca0bfa11bbb9a9207f5d2104f47d3d71b4616e, 8a4236456a3a402f6bb92aa7b75e7a3b4ef7a72c or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: security: Restrict CONFIG_ZERO_CALL_USED_REGS to gcc or clang > 15.0.6 A bad bug in clang's implementation of -fzero-call-used-regs can result in NULL pointer dereferences (see the links above the check for more information). Restrict CONFIG_CC_HAS_ZERO_CALL_USED_REGS to either a supported GCC version or a clang newer than 15.0.6, which will catch both a theoretical 15.0.7 and the upcoming 16.0.0, which will both have the bug fixed.

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 14th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.15affected
    • a82adfd5c7cb4b8bb37ef439aed954f9972bb618 and later · before 8a4236456a3a402f6bb92aa7b75e7a3b4ef7a72caffected · git
    • a82adfd5c7cb4b8bb37ef439aed954f9972bb618 and later · before 0b202dfedb5aa2e7d07d849be33fa3a48c026926affected · git
    • a82adfd5c7cb4b8bb37ef439aed954f9972bb618 and later · before 21ca0bfa11bbb9a9207f5d2104f47d3d71b4616eaffected · git
    • a82adfd5c7cb4b8bb37ef439aed954f9972bb618 and later · before d6a9fb87e9d18f3394a9845546bbe868efdccfd2affected · git
    • before 5.15not affected · semver
    • 5.15.86 and later · up to and including 5.15.*not affected · semver
    • 6.0.16 and later · up to and including 6.0.*not affected · semver
    • 6.1.2 and later · up to and including 6.1.*not affected · semver
    • 6.2 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50810Dec 30, 2025 · rapidio: devices: fix missing put_device in mport_cdev_open
    0Monitor
  • ← EarlierCVE-2022-50811Dec 30, 2025 · erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
    0Monitor
  • Later →CVE-2022-50813Dec 30, 2025 · drivers: mcb: fix resource leak in mcb_probe()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0b202dfedb5aa2e7d07d849be33fa3a48c026926Vendor (CNA)
Linux Linux21ca0bfa11bbb9a9207f5d2104f47d3d71b4616eVendor (CNA)
Linux Linux8a4236456a3a402f6bb92aa7b75e7a3b4ef7a72cVendor (CNA)
Linux Linuxd6a9fb87e9d18f3394a9845546bbe868efdccfd2Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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