net: sched: fix use-after-free in taprio_change()
In 'taprio_change()', 'admin' pointer may become dangling due to sched
switch / removal caused by 'advance_sched()', and critical section
protected by 'q->current_entry_lock' is too small to prevent from such
a scenario (which causes use-after-free detected by KASAN). Fix this
by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update
'admin' immediately before an attempt to schedule freeing.
Metrics
Affected Vendors & Products
| Source | ID | Title | 
|---|---|---|
  Debian DLA | 
                DLA-4008-1 | linux-6.1 security update | 
  Debian DLA | 
                DLA-4075-1 | linux security update | 
  Ubuntu USN | 
                USN-7276-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7277-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7288-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7288-2 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7289-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7289-2 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7289-3 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7289-4 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7291-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7293-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7294-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7294-2 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7294-3 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7294-4 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7295-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7305-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7308-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7310-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7331-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7388-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7389-1 | Linux kernel (NVIDIA Tegra) vulnerabilities | 
  Ubuntu USN | 
                USN-7390-1 | Linux kernel (Xilinx ZynqMP) vulnerabilities | 
  Ubuntu USN | 
                USN-7393-1 | Linux kernel (FIPS) vulnerabilities | 
  Ubuntu USN | 
                USN-7401-1 | Linux kernel (AWS) vulnerabilities | 
  Ubuntu USN | 
                USN-7413-1 | Linux kernel (IoT) vulnerabilities | 
  Ubuntu USN | 
                USN-7449-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7449-2 | Linux kernel (HWE) vulnerabilities | 
  Ubuntu USN | 
                USN-7450-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7451-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7452-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7453-1 | Linux kernel (Real-time) vulnerabilities | 
  Ubuntu USN | 
                USN-7458-1 | Linux kernel (IBM) vulnerabilities | 
  Ubuntu USN | 
                USN-7468-1 | Linux kernel (Azure, N-Series) vulnerabilities | 
  Ubuntu USN | 
                USN-7523-1 | Linux kernel (Raspberry Pi Real-time) vulnerabilities | 
  Ubuntu USN | 
                USN-7524-1 | Linux kernel (Raspberry Pi) vulnerabilities | 
  Ubuntu USN | 
                USN-7539-1 | Linux kernel (Raspberry Pi) vulnerabilities | 
  Ubuntu USN | 
                USN-7540-1 | Linux kernel (Raspberry Pi) vulnerabilities | 
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Mon, 03 Nov 2025 23:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
         | 
Mon, 03 Nov 2025 21:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
         | 
Fri, 11 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        
        epss
         
  | 
    
        
        
        epss
         
  | 
Wed, 14 May 2025 02:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Redhat
         Redhat enterprise Linux  | 
|
| CPEs | cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9  | 
|
| Vendors & Products | 
        
        Redhat
         Redhat enterprise Linux  | 
Wed, 11 Dec 2024 15:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        ssvc
         
  | 
Fri, 08 Nov 2024 20:00:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Linux
         Linux linux Kernel  | 
|
| Weaknesses | CWE-416 | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*  | 
|
| Vendors & Products | 
        
        Linux
         Linux linux Kernel  | 
|
| Metrics | 
        
        
        cvssV3_1
         
  | 
    
        
        
        cvssV3_1
         
  | 
Fri, 08 Nov 2024 16:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
         | 
Wed, 06 Nov 2024 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
         | |
| Metrics | 
        
        
        threat_severity
         
  | 
    
        
        cvssV3_1
         
 
  | 
Tue, 05 Nov 2024 17:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: net: sched: fix use-after-free in taprio_change() In 'taprio_change()', 'admin' pointer may become dangling due to sched switch / removal caused by 'advance_sched()', and critical section protected by 'q->current_entry_lock' is too small to prevent from such a scenario (which causes use-after-free detected by KASAN). Fix this by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update 'admin' immediately before an attempt to schedule freeing. | |
| Title | net: sched: fix use-after-free in taprio_change() | |
| References | 
         | 
        
  | 
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-11-03T22:25:48.715Z
Reserved: 2024-10-21T19:36:19.954Z
Link: CVE-2024-50127
Updated: 2024-12-11T14:28:22.710Z
Status : Modified
Published: 2024-11-05T18:15:15.670
Modified: 2025-11-03T23:16:53.057
Link: CVE-2024-50127
                        OpenCVE Enrichment
                    No data.
 Debian DLA
 Ubuntu USN