pktgen: Avoid out-of-bounds access in get_imix_entries
Passing a sufficient amount of imix entries leads to invalid access to the
pkt_dev->imix_entries array because of the incorrect boundary check.
UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24
index 20 is out of range for type 'imix_pkt [20]'
CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
Call Trace:
<TASK>
dump_stack_lvl lib/dump_stack.c:117
__ubsan_handle_out_of_bounds lib/ubsan.c:429
get_imix_entries net/core/pktgen.c:874
pktgen_if_write net/core/pktgen.c:1063
pde_write fs/proc/inode.c:334
proc_reg_write fs/proc/inode.c:346
vfs_write fs/read_write.c:593
ksys_write fs/read_write.c:644
do_syscall_64 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[ fp: allow to fill the array completely; minor changelog cleanup ]
Metrics
Affected Vendors & Products
| Source | ID | Title | 
|---|---|---|
  Debian DLA | 
                DLA-4076-1 | linux-6.1 security update | 
  EUVD | 
                EUVD-2025-2629 | In the Linux kernel, the following vulnerability has been resolved: pktgen: Avoid out-of-bounds access in get_imix_entries Passing a sufficient amount of imix entries leads to invalid access to the pkt_dev->imix_entries array because of the incorrect boundary check. UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 Found by Linux Verification Center (linuxtesting.org) with SVACE. [ fp: allow to fill the array completely; minor changelog cleanup ] | 
  Ubuntu USN | 
                USN-7387-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7387-2 | Linux kernel (FIPS) vulnerabilities | 
  Ubuntu USN | 
                USN-7387-3 | Linux kernel (Real-time) 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-7407-1 | Linux kernel (HWE) vulnerabilities | 
  Ubuntu USN | 
                USN-7421-1 | Linux kernel (Azure) vulnerabilities | 
  Ubuntu USN | 
                USN-7445-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7448-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7458-1 | Linux kernel (IBM) vulnerabilities | 
  Ubuntu USN | 
                USN-7459-1 | Linux kernel (Intel IoTG) vulnerabilities | 
  Ubuntu USN | 
                USN-7459-2 | Linux kernel (GCP) vulnerabilities | 
  Ubuntu USN | 
                USN-7595-1 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7595-2 | Linux kernel (Real-time) vulnerabilities | 
  Ubuntu USN | 
                USN-7595-3 | Linux kernel (Raspberry Pi Real-time) vulnerabilities | 
  Ubuntu USN | 
                USN-7595-4 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7595-5 | Linux kernel vulnerabilities | 
  Ubuntu USN | 
                USN-7596-1 | Linux kernel (Azure) vulnerabilities | 
  Ubuntu USN | 
                USN-7596-2 | Linux kernel (Azure, N-Series) vulnerabilities | 
  Ubuntu USN | 
                USN-7653-1 | Linux kernel (HWE) vulnerabilities | 
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Mon, 03 Nov 2025 21:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
         | 
Wed, 01 Oct 2025 20:15:00 +0000
| Type | Values Removed | Values Added | 
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| Metrics | 
        
        ssvc
         
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Wed, 16 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        
        epss
         
  | 
    
        
        
        epss
         
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Fri, 11 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
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        epss
         
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        epss
         
  | 
Tue, 04 Feb 2025 15:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Linux
         Linux linux Kernel  | 
|
| Weaknesses | CWE-129 | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.13:rc7:*:*:*:*:*:*  | 
|
| Vendors & Products | 
        
        Linux
         Linux linux Kernel  | 
|
| Metrics | 
        
        
        cvssV3_1
         
  | 
    
        
        
        cvssV3_1
         
  | 
Sat, 01 Feb 2025 02:00:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References | 
         | |
| Metrics | 
        
        
        threat_severity
         
  | 
    
        
        cvssV3_1
         
 
  | 
Fri, 31 Jan 2025 11:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: pktgen: Avoid out-of-bounds access in get_imix_entries Passing a sufficient amount of imix entries leads to invalid access to the pkt_dev->imix_entries array because of the incorrect boundary check. UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 Found by Linux Verification Center (linuxtesting.org) with SVACE. [ fp: allow to fill the array completely; minor changelog cleanup ] | |
| Title | pktgen: Avoid out-of-bounds access in get_imix_entries | |
| References | 
         | 
        
  | 
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-11-03T20:58:57.266Z
Reserved: 2024-12-29T08:45:45.738Z
Link: CVE-2025-21680
Updated: 2025-10-01T15:59:08.530Z
Status : Modified
Published: 2025-01-31T12:15:29.160
Modified: 2025-11-03T21:19:06.307
Link: CVE-2025-21680
                        OpenCVE Enrichment
                    No data.
 Debian DLA
 EUVD
 Ubuntu USN