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TI-2022-25751 Aliases CVE-2022-50266GHSA-gcqm-mw5p-q5gh

kprobes: Fix check for probe enabled in kill_kprobe()

Priority LOW 24CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix check for probe enabled in kill_kprobe() In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that "!kprobe_disabled(p)" is always false. The disarm_kprobe_ftrace() call introduced by commit: 0cb2f1372baa ("kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler") to fix the NULL pointer reference problem. When the probe is enabled, if we do not disarm it, this problem still exists. Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00157 4th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.5, 4.10, 4.15 +6Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.4.238 to before 4.5; 4.9.238 to before 4.10; 4.14.200 to before 4.15; 4.19.149 to before 4.20; 5.4.69 to before 5.5; 5.8.13 to before 5.94.5, 4.10, 4.15, 4.20, 5.5, 5.9Patch availableCNA
LinuxLinux5.9 and later6.0.16, 6.1.2, 6.2Patch availableCNA
  • Linux VendorLinux Affected 4.4.238 to before 4.5; 4.9.238 to before 4.10; 4.14.200 to before 4.15; 4.19.149 to before 4.20; 5.4.69 to before 5.5; 5.8.13 to before 5.9 Fixed in 4.5, 4.10, 4.15, 4.20, 5.5, 5.9 Patch available CNA
  • Linux VendorLinux Affected 5.9 and later Fixed in 6.0.16, 6.1.2, 6.2 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.4.238 to before 4.5; 4.9.238 to before 4.10; 4.14.200 to before 4.15; 4.19.149 to before 4.20; 5.4.69 to before 5.5; 5.8.13 to before 5.9; 5.9.1 to before 6.0.16; 6.1 to before 6.1.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9:-:*:*:*:*:*:*5.9VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9:rc7:*:*:*:*:*:*5.9 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9:rc8:*:*:*:*:*:*5.9 rc8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.4.238 to before 4.5; 4.9.238 to before 4.10; 4.14.200 to before 4.15; 4.19.149 to before 4.20; 5.4.69 to before 5.5; 5.8.13 to before 5.9; 5.9.1 to before 6.0.16; 6.1 to before 6.1.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9:-:*:*:*:*:*:* Versions 5.9 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9:rc7:*:*:*:*:*:* Versions 5.9 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9:rc8:*:*:*:*:*:* Versions 5.9 rc8 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.5, 4.10, 4.15, 4.20, 5.5, 5.9
  • Fix · CNA Linux (Linux) Fixed in 6.0.16, 6.1.2, 6.2

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-50266
  2. 2026-10-03 Alias added: GHSA-gcqm-mw5p-q5gh
  3. 2026-11-05 CISA SSVC decision points changed

References

Patch 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences