CVE-2022-50854 Details
Description
In the Linux kernel, the following vulnerability has been resolved: nfc: virtual_ncidev: Fix memory leak in virtual_nci_send() skb should be free in virtual_nci_send(), otherwise kmemleak will report memleak. Steps for reproduction (simulated in qemu): cd tools/testing/selftests/nci make ./nci_dev BUG: memory leak unreferenced object 0xffff888107588000 (size 208): comm "nci_dev", pid 206, jiffies 4294945376 (age 368.248s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000008d94c8fd>] __alloc_skb+0x1da/0x290 [<00000000278bc7f8>] nci_send_cmd+0xa3/0x350 [<0000000081256a22>] nci_reset_req+0x6b/0xa0 [<000000009e721112>] __nci_request+0x90/0x250 [<000000005d556e59>] nci_dev_up+0x217/0x5b0 [<00000000e618ce62>] nfc_dev_up+0x114/0x220 [<00000000981e226b>] nfc_genl_dev_up+0x94/0xe0 [<000000009bb03517>] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0 [<00000000b7f8c101>] genl_rcv_msg+0x35c/0x640 [<00000000c94075ff>] netlink_rcv_skb+0x11e/0x350 [<00000000440cfb1e>] genl_rcv+0x24/0x40 [<0000000062593b40>] netlink_unicast+0x43f/0x640 [<000000001d0b13cc>] netlink_sendmsg+0x73a/0xbf0 [<000000003272487f>] __sys_sendto+0x324/0x370 [<00000000ef9f1747>] __x64_sys_sendto+0xdd/0x1b0 [<000000001e437841>] do_syscall_64+0x3f/0x90
A memory leak vulnerability has been identified in the Linux kernel's NFC virtual NCI device driver. The issue arises in the 'virtual_nci_send' function, where the socket buffer (skb) is not properly freed. This oversight leads to unreferenced objects remaining in memory, which can be detected by the kernel's memory leak tracking system (kmemleak). The vulnerability has been addressed in the official Linux Git repository.
Users can upgrade to the latest version of the Linux kernel, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Dec 30, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2c46a9a5f0b1c7341aa67667801079f3ff571678 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/88e879c9f59511174ef0ab1a3c9c83e2dbf8a213 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/e840d8f4a1b323973052a1af5ad4edafcde8ae3d | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Dec 30, 2025 | New CVE Received | kernel.org |