CVE-2026-22994
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-01-23
Modified: 2026-11-10
First seen: 2026-11-05
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference count leak in bpf_prog_test_run_xdp() syzbot is reporting unregister_netdevice: waiting for sit0 to become free. Usage count = 2 problem. A debug printk() patch found that a refcount is obtained at xdp_convert_md_to_buff() from bpf_prog_test_run_xdp(). According to commit ec94670fcb3b ("bpf: Support specifying ingress via xdp_md context in BPF_PROG_TEST_RUN"), the refcount obtained by xdp_convert_md_to_buff() will be released by xdp_convert_buff_to_md(). Therefore, we can consider that the error handling path introduced by commit 1c1949982524 ("bpf: introduce frags support to bpf_prog_test_run_xdp()") forgot to call xdp_convert_buff_to_md().
Affected Software (18)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < 368569bc546d3368ee9980ba79fc42fdff9a3365 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < 98676ee71fd4eafeb8be63c7f3f1905d40e03101 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < fb9ef40cccdbacce36029b305d0ef1e12e4fea38 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < 737be05a765761d7d7c9f7fe92274bd8e6f6951e |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < ec69daabe45256f98ac86c651b8ad1b2574489a7 |
| Linux | Linux | 5.18 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < 368569bc546d3368ee9980ba79fc42fdff9a3365 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < 98676ee71fd4eafeb8be63c7f3f1905d40e03101 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < fb9ef40cccdbacce36029b305d0ef1e12e4fea38 |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < 737be05a765761d7d7c9f7fe92274bd8e6f6951e |
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260 < ec69daabe45256f98ac86c651b8ad1b2574489a7 |
| Linux | Linux | 5.18 |
| linux | linux_kernel | 5.18 – 6.1.161 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |
| linux | linux_kernel | 6.19 |