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CVE-2022-50657· NVD / CVE Program· CNA Linux

riscv: mm: add missing memcpy in kasan_init

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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 9f2ac64d6ca60db99132e08628ac2899f956a0ec, ff0f6becf3a6f817838b6f80a2c9cca43dce0576.

Low priority for now. Upgrade to Linux Linux 9f2ac64d6ca60db99132e08628ac2899f956a0ec, ff0f6becf3a6f817838b6f80a2c9cca43dce0576 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: riscv: mm: add missing memcpy in kasan_init Hi Atish, It seems that the panic is due to the missing memcpy during kasan_init. Could you please check whether this patch is helpful? When doing kasan_populate, the new allocated base_pud/base_p4d should contain kasan_early_shadow_{pud, p4d}'s content. Add the missing memcpy to avoid page fault when read/write kasan shadow region. Tested on: - qemu with sv57 and CONFIG_KASAN on. - qemu with sv48 and CONFIG_KASAN on.

—No exploit Fix available
Published
Dec 9, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 12th 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?

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Affected systems

Is your version affected?

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—

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

    • 5.18affected
    • 8fbdccd2b17335e1881a23865e98c63fcc345938 and later · before ff0f6becf3a6f817838b6f80a2c9cca43dce0576affected · git
    • 8fbdccd2b17335e1881a23865e98c63fcc345938 and later · before 9f2ac64d6ca60db99132e08628ac2899f956a0ecaffected · git
    • before 5.18not affected · semver
    • 6.0.7 and later · up to and including 6.0.*not affected · semver
    • 6.1 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 6.0.7-16.0.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
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Published before and after this one in the same product

  • ← EarlierCVE-2023-53803Dec 9, 2025 · scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
    32Monitor
  • ← EarlierCVE-2023-53816Dec 9, 2025 · drm/amdkfd: fix potential kgd_mem UAFs
    31Monitor
  • Later →CVE-2022-50658Dec 9, 2025 · cpufreq: qcom: fix memory leak in error path
    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 Linux9f2ac64d6ca60db99132e08628ac2899f956a0ecVendor (CNA)
Linux Linuxff0f6becf3a6f817838b6f80a2c9cca43dce0576Vendor (CNA)
debian:linux6.0.7-1 · 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

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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 (1 more)

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

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