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CVE-2026-22994

Updated on 23 Jan 2026

Severity

5.5 Medium severity

Details

CVSS score
5.5
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

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().

Details

Affected product:
AlmaLinux 9.2 ESU , TuxCare 9.6 ESU
Affected packages:
kernel @ 5.14.0 (+1 more)

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
AlmaLinux 9.2 ESU Planned —
AlmaLinux 9.6 ESU Released
11 kernels
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els1
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els2
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els3
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els4
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els5
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els6
  • 5.14.0-570.62.1.el9_6.tuxcare.1.els7
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els1
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els2
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els3
  • 5.14.0-570.62.1.el9_6.tuxcare.5.els4
Amazon Linux 2023 Planned —
Debian 12 Planned —
Debian 13 Planned —
Oracle Linux 8 UEK 7 Released
52 kernels
  • 5.15.0-300.163.18.el8uek
  • 5.15.0-300.163.18.1.el8uek
  • 5.15.0-300.163.18.1.1.el8uek
  • 5.15.0-301.163.5.2.el8uek
  • 5.15.0-302.167.6.el8uek
  • 5.15.0-300.163.18.7.el8uek
  • 5.15.0-302.167.6.1.el8uek
  • 5.15.0-303.171.5.2.el8uek
  • 5.15.0-303.171.5.2.1.el8uek
  • 5.15.0-304.171.4.el8uek
  • 5.15.0-304.171.4.1.el8uek
  • 5.15.0-304.171.4.3.el8uek
  • 5.15.0-303.171.5.2.2.el8uek
  • 5.15.0-305.176.4.el8uek
  • 5.15.0-306.177.4.el8uek
  • 5.15.0-306.177.4.1.el8uek
  • 5.15.0-307.178.5.el8uek
  • 5.15.0-308.179.6.el8uek
  • 5.15.0-308.179.6.2.el8uek
  • 5.15.0-308.179.6.3.el8uek
  • 5.15.0-309.180.4.el8uek
  • 5.15.0-308.179.6.7.el8uek
  • 5.15.0-309.180.4.2.el8uek
  • 5.15.0-308.179.6.11.el8uek
  • 5.15.0-310.184.5.2.el8uek
  • 5.15.0-310.184.5.3.el8uek
  • 5.15.0-311.185.9.el8uek
  • 5.15.0-308.179.6.14.el8uek
  • 5.15.0-312.187.5.el8uek
  • 5.15.0-312.187.5.1.el8uek
  • 5.15.0-312.187.5.2.el8uek
  • 5.15.0-312.187.5.3.el8uek
  • 5.15.0-308.179.6.16.el8uek
  • 5.15.0-313.189.5.1.el8uek
  • 5.15.0-313.189.5.2.el8uek
  • 5.15.0-313.189.5.3.el8uek
  • 5.15.0-314.193.5.3.el8uek
  • 5.15.0-314.193.5.4.el8uek
  • 5.15.0-314.193.5.5.el8uek
  • 5.15.0-315.196.5.1.el8uek
  • 5.15.0-315.196.5.2.el8uek
  • 5.15.0-316.196.4.1.el8uek
  • 5.15.0-316.196.4.2.el8uek
  • 5.15.0-317.197.5.1.el8uek
  • 5.15.0-317.197.5.2.el8uek
  • 5.15.0-318.199.3.2.el8uek
  • 5.15.0-318.199.3.2.1.el8uek
  • 5.15.0-319.201.4.2.el8uek
  • 5.15.0-319.201.4.3.el8uek
  • 5.15.0-319.201.4.4.el8uek
  • 5.15.0-319.201.4.6.el8uek
  • 5.15.0-318.199.3.6.el8uek
Oracle Linux 9 UEK 7 Released
52 kernels
  • 5.15.0-300.163.18.el9uek
  • 5.15.0-300.163.18.1.el9uek
  • 5.15.0-300.163.18.1.1.el9uek
  • 5.15.0-301.163.5.2.el9uek
  • 5.15.0-302.167.6.el9uek
  • 5.15.0-300.163.18.7.el9uek
  • 5.15.0-302.167.6.1.el9uek
  • 5.15.0-303.171.5.2.el9uek
  • 5.15.0-303.171.5.2.1.el9uek
  • 5.15.0-304.171.4.el9uek
  • 5.15.0-304.171.4.1.el9uek
  • 5.15.0-304.171.4.3.el9uek
  • 5.15.0-303.171.5.2.2.el9uek
  • 5.15.0-305.176.4.el9uek
  • 5.15.0-306.177.4.el9uek
  • 5.15.0-306.177.4.1.el9uek
  • 5.15.0-307.178.5.el9uek
  • 5.15.0-308.179.6.el9uek
  • 5.15.0-308.179.6.2.el9uek
  • 5.15.0-308.179.6.3.el9uek
  • 5.15.0-309.180.4.el9uek
  • 5.15.0-308.179.6.7.el9uek
  • 5.15.0-309.180.4.2.el9uek
  • 5.15.0-308.179.6.11.el9uek
  • 5.15.0-310.184.5.2.el9uek
  • 5.15.0-310.184.5.3.el9uek
  • 5.15.0-311.185.9.el9uek
  • 5.15.0-308.179.6.14.el9uek
  • 5.15.0-312.187.5.el9uek
  • 5.15.0-312.187.5.1.el9uek
  • 5.15.0-312.187.5.2.el9uek
  • 5.15.0-312.187.5.3.el9uek
  • 5.15.0-308.179.6.16.el9uek
  • 5.15.0-313.189.5.1.el9uek
  • 5.15.0-313.189.5.2.el9uek
  • 5.15.0-313.189.5.3.el9uek
  • 5.15.0-314.193.5.3.el9uek
  • 5.15.0-314.193.5.4.el9uek
  • 5.15.0-314.193.5.5.el9uek
  • 5.15.0-315.196.5.1.el9uek
  • 5.15.0-315.196.5.2.el9uek
  • 5.15.0-316.196.4.1.el9uek
  • 5.15.0-316.196.4.2.el9uek
  • 5.15.0-317.197.5.1.el9uek
  • 5.15.0-317.197.5.2.el9uek
  • 5.15.0-318.199.3.2.el9uek
  • 5.15.0-318.199.3.2.1.el9uek
  • 5.15.0-319.201.4.2.el9uek
  • 5.15.0-319.201.4.3.el9uek
  • 5.15.0-319.201.4.4.el9uek
  • 5.15.0-319.201.4.6.el9uek
  • 5.15.0-318.199.3.6.el9uek
Ubuntu 24.04 Released
43 kernels
  • 6.8.0-35.35
  • 6.8.0-38.38
  • 6.8.0-36.36
  • 6.8.0-39.39
  • 6.8.0-40.40
  • 6.8.0-41.41
  • 6.8.0-44.44
  • 6.8.0-45.45
  • 6.8.0-31.31
  • 6.8.0-47.47
  • 6.8.0-48.48
  • 6.8.0-49.49
  • 6.8.0-50.51
  • 6.8.0-51.52
  • 6.8.0-52.53
  • 6.8.0-54.56
  • 6.8.0-55.57
  • 6.8.0-53.55
  • 6.8.0-56.58
  • 6.8.0-57.59
  • 6.8.0-58.60
  • 6.8.0-59.61
  • 6.8.0-60.63
  • 6.8.0-62.65
  • 6.8.0-63.66
  • 6.8.0-64.67
  • 6.8.0-71.71
  • 6.8.0-78.78
  • 6.8.0-79.79
  • 6.8.0-84.84
  • 6.8.0-85.85
  • 6.8.0-83.83
  • 6.8.0-86.87
  • 6.8.0-87.88
  • 6.8.0-88.89
  • 6.8.0-90.91
  • 6.8.0-94.96
  • 6.8.0-100.100
  • 6.8.0-101.101
  • 6.8.0-106.106
  • 6.8.0-107.107
  • 6.8.0-110.110
  • 6.8.0-111.111
Ubuntu 24.04 AWS Planned —