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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2022-50656

nfc: pn533: Clear nfc_target before being used

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < 9da4a0411f3455e3885831d0758bee3e3d565bbcaffected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < 61a7e15d55fae329a245535c3bac494e401005b8affected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < bef2f478513e7367ef3b05441f6afca981de29beaffected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < 8bddef54cbe9ede5ac7478f1e1e968fcfe7e6f03affected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < aea9e64dec2cc6cd742e07ecd4e6236fc76b389baffected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < aae9c24ebd901f482e6c88b6f9e0c80dc5b536d6affected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < 755019e37815a66bb0a23893debbd3dd640ccbd3affected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < e491285b4d08884b622638be8e4961eb43b0af64affected
  • 361f3cb7f9cfdb82c80926d0e7843c098c034545 to < 9f28157778ede0d4f183f7ab3b46995bb400abbeaffected

Linux Linux

Default version status: affected

  • 3.3affected
  • 0 to < 3.3unaffected
  • 4.9.337 to ≤ 4.9.*unaffected
  • 4.14.303 to ≤ 4.14.*unaffected
  • 4.19.270 to ≤ 4.19.*unaffected
  • 5.4.229 to ≤ 5.4.*unaffected
  • 5.10.163 to ≤ 5.10.*unaffected
  • 5.15.86 to ≤ 5.15.*unaffected
  • 6.0.16 to ≤ 6.0.*unaffected
  • 6.1.2 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References