8.1

CVE-2022-50656: nfc: pn533: Clear nfc_target before being used

Deferred
AliasesUBUNTU-CVE-2022-50656DEBIAN-CVE-2022-50656
Published 09-12-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50656 is a high (CVSS 8.1) vulnerability in linux. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 28% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.1, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2026:0263-1SUSE-SU-2026:0316-1SUSE-SU-2026:0317-1SUSE-SU-2026:0411-1SUSE-SU-2026:0617-1

Timeline

  1. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

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_start genl_family_rcv_msg_dumpit genl_rcv_msg netlink_rcv_skb genl_rcv netlink_unicast netlink_sendmsg sock_sendmsg ____sys_sendmsg ___sys_sendmsg __sys_sendmsg do_syscall_64

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.34% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu121 products
  • linuxAll versions (No fix recorded) | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.4-1
Linux1 product
  • linux≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < 9da4a0411f3455e3885831d0758bee3e3d565bbc | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < 61a7e15d55fae329a245535c3bac494e401005b8 | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < bef2f478513e7367ef3b05441f6afca981de29be | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < 8bddef54cbe9ede5ac7478f1e1e968fcfe7e6f03 | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < aea9e64dec2cc6cd742e07ecd4e6236fc76b389b | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6 | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < 755019e37815a66bb0a23893debbd3dd640ccbd3 | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < e491285b4d08884b622638be8e4961eb43b0af64 | ≥ 361f3cb7f9cfdb82c80926d0e7843c098c034545, < 9f28157778ede0d4f183f7ab3b46995bb400abbe | 3.3

3 vendors · 123 products

References

13 links
Show all 13 references