CVE-2022-50656nfc: pn533: Clear nfc_target before being used
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 361f3cb7f9cfdb82c80926d0e7843c098c034545 builds before 9da4a0411f3455e3885831d0758bee3e3d565bbc; 361f3cb7f9cfdb82c80926d0e7843c098c034545 builds before 61a7e15d55fae329a245535c3bac494e401005b8; from 361f3cb7f9cfdb82c80926d0e7843c098c034545 before bef2f478513e7367ef3b05441f6afca981de29be; 361f3cb7f9cfdb82c80926d0e7843c098c034545 builds before 8bddef54cbe9ede5ac7478f1e1e968fcfe7e6f03; from 361f3cb7f9cfdb82c80926d0e7843c098c034545 before aea9e64dec2cc6cd742e07ecd4e6236fc76b389b; from 361f3cb7f9cfdb82c80926d0e7843c098c034545 before aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6; from 361f3cb7f9cfdb82c80926d0e7843c098c034545 before 755019e37815a66bb0a23893debbd3dd640ccbd3; from 361f3cb7f9cfdb82c80926d0e7843c098c034545 before e491285b4d08884b622638be8e4961eb43b0af64; and 1 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/9da4a0411f3455e3885831d0758bee3e3d565bbc
- https://git.kernel.org/stable/c/61a7e15d55fae329a245535c3bac494e401005b8
- https://git.kernel.org/stable/c/bef2f478513e7367ef3b05441f6afca981de29be
- https://git.kernel.org/stable/c/8bddef54cbe9ede5ac7478f1e1e968fcfe7e6f03
- https://git.kernel.org/stable/c/aea9e64dec2cc6cd742e07ecd4e6236fc76b389b
- https://git.kernel.org/stable/c/aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6
- https://git.kernel.org/stable/c/755019e37815a66bb0a23893debbd3dd640ccbd3
- https://git.kernel.org/stable/c/e491285b4d08884b622638be8e4961eb43b0af64
- https://git.kernel.org/stable/c/9f28157778ede0d4f183f7ab3b46995bb400abbe
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.