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Vulnerabilities

Vulnerability · CVE-2022-50656

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfc_target before being used Fix a slab-out-of-bounds read that occurs in nla_put() called fro

Published Dec 9, 2025 · catalog updated Aug 5, 2026 · Linux Linux

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2022-50656. EPSS is 0.34%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Version ranges on file
Affected products
vendor Linux Linux 361f3cb7f9cfdb82c80926d0e7843c098c034545 <aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfc_target before being used Fix a slab-out-of-bounds read that occurs in nla_put() called from nfc_genl_send_target() when target->sensb_res_len, which is duplicated from an nfc_target in pn533, is too large as the nfc_target is not properly initialized and retains garbage values. Clear nfc_targets with memset() before they are used. Found by a modified version of syzkaller. BUG: KASAN: slab-out-of-bounds in nla_put Call Trace: memcpy nla_put nfc_genl_dump_targets genl_lock_dumpit netlink_dump __netlink_dump

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux 361f3cb7f9cfdb82c80926d0e7843c098c034545 <aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6361f3cb7f9cfdb82c80926d0e7843c098c034545 <aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6

How to fix CVE-2022-50656

  • Upgrade

    CVE-2022-50656 lists a fix boundary at aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in 361f3cb7f9cfdb82c80926d0e7843c098c034545 <aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2022-50656. EPSS is 0.34%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux 361f3cb7f9cfdb82c80926d0e7843c098c034545 <aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6 361f3cb7f9cfdb82c80926d0e7843c098c034545 <aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 9, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfc_target before being used Fix a slab-out-of-bounds read that occurs in nla_put() called from nfc_genl_send_target() when target->sensb_res_len, which is duplicated from an nfc_target in pn533, is too large as the nfc_target is not properly initialized and retains garbage values. Clear nfc_targets with memset()

  2. Aug 5, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfc_target before being used Fix a slab-out-of-bounds read that occurs in nla_put() called from nfc_genl_send_target() when target->sensb_res_len, which is duplicated from an nfc_target in pn533, is too large as the nfc_target is not properly initialized and retains garbage values. Clear nfc_targets with memset()

Sources

  • CVE.orgVulnerability recordCVE-2022-50656

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-50656

    30-day exploitation probability 0.34%

    first.org
  • EUVDVulnerability recordEUVD-2022-55700

    In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Clear nfc_target before being used Fix a slab-out-of-bounds read that occurs in nla_put() called from nfc_genl_send_target() when target->sensb_res_len, which is duplicated from an nfc_target in pn533

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 26, 2026
  • CVE.orgOct 26, 2026
  • EUVDOct 26, 2026