CVE-2026-23121

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23121
In the Linux kernel, the following vulnerability has been resolved: mISDN: annotate data-race around dev->work dev->work can re read locklessly in mISDN_read() and mISDN_poll(). Add READ_ONCE()/WRITE_ONCE() annotations. BUG: KCSAN: data-race in mISDN_ioctl / mISDN_read write to 0xffff88812d848280 of 4 bytes by task 10864 on cpu 1: misdn_add_timer drivers/isdn/mISDN/timerdev.c:175 [inline] mISDN_ioctl+0x2fb/0x550 drivers/isdn/mISDN/timerdev.c:233 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xce/0x140 fs/ioctl.c:583 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:583 x64_sys_call+0x14b0/0x3000 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd8/0x2c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff88812d848280 of 4 bytes by task 10857 on cpu 0: mISDN_read+0x1f2/0x470 drivers/isdn/mISDN/timerdev.c:112 do_loop_readv_writev fs/read_write.c:847 [inline] vfs_readv+0x3fb/0x690 fs/read_write.c:1020 do_readv+0xe7/0x210 fs/read_write.c:1080 __do_sys_readv fs/read_write.c:1165 [inline] __se_sys_readv fs/read_write.c:1162 [inline] __x64_sys_readv+0x45/0x50 fs/read_write.c:1162 x64_sys_call+0x2831/0x3000 arch/x86/include/generated/asm/syscalls_64.h:20 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd8/0x2c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000 -> 0x00000001

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/13f3b3b87068898056db4c79ee67052fbde11d43 Patch
https://git.kernel.org/stable/c/7ac345a93af31358e18e9606eb7b354691bf6757 Patch
https://git.kernel.org/stable/c/8175dbf174d487afab81e936a862a8d9b8a1ccb6 Patch
https://git.kernel.org/stable/c/aa6e33cd74ca4965f2bbcb025e0b672fb0168a69 Patch
https://git.kernel.org/stable/c/accc3f8266d2a49881dbcf78c459477f4efa0ff3 Patch
https://git.kernel.org/stable/c/d5d99cb9e0839093cd53aa3b28176fce2f820ca0 Patch
https://git.kernel.org/stable/c/fc8ba17fd3337bd8b1913c30b95df0fee00d8fb7 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
History

18 Mar 2026, 13:39

Type Values Removed Values Added
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/13f3b3b87068898056db4c79ee67052fbde11d43 - () https://git.kernel.org/stable/c/13f3b3b87068898056db4c79ee67052fbde11d43 - Patch
References () https://git.kernel.org/stable/c/7ac345a93af31358e18e9606eb7b354691bf6757 - () https://git.kernel.org/stable/c/7ac345a93af31358e18e9606eb7b354691bf6757 - Patch
References () https://git.kernel.org/stable/c/8175dbf174d487afab81e936a862a8d9b8a1ccb6 - () https://git.kernel.org/stable/c/8175dbf174d487afab81e936a862a8d9b8a1ccb6 - Patch
References () https://git.kernel.org/stable/c/aa6e33cd74ca4965f2bbcb025e0b672fb0168a69 - () https://git.kernel.org/stable/c/aa6e33cd74ca4965f2bbcb025e0b672fb0168a69 - Patch
References () https://git.kernel.org/stable/c/accc3f8266d2a49881dbcf78c459477f4efa0ff3 - () https://git.kernel.org/stable/c/accc3f8266d2a49881dbcf78c459477f4efa0ff3 - Patch
References () https://git.kernel.org/stable/c/d5d99cb9e0839093cd53aa3b28176fce2f820ca0 - () https://git.kernel.org/stable/c/d5d99cb9e0839093cd53aa3b28176fce2f820ca0 - Patch
References () https://git.kernel.org/stable/c/fc8ba17fd3337bd8b1913c30b95df0fee00d8fb7 - () https://git.kernel.org/stable/c/fc8ba17fd3337bd8b1913c30b95df0fee00d8fb7 - Patch
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

18 Feb 2026, 17:52

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: mISDN: anotar condición de carrera de datos alrededor de dev->work dev->work puede ser releído sin bloqueo en mISDN_read() y mISDN_poll(). Añadir anotaciones READ_ONCE()/WRITE_ONCE(). ERROR: KCSAN: condición de carrera de datos en mISDN_ioctl / mISDN_read escritura en 0xffff88812d848280 de 4 bytes por la tarea 10864 en la CPU 1: misdn_add_timer drivers/isdn/mISDN/timerdev.c:175 [inline] mISDN_ioctl+0x2fb/0x550 drivers/isdn/mISDN/timerdev.c:233 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xce/0x140 fs/ioctl.c:583 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:583 x64_sys_call+0x14b0/0x3000 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd8/0x2c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f lectura en 0xffff88812d848280 de 4 bytes por la tarea 10857 en la CPU 0: mISDN_read+0x1f2/0x470 drivers/isdn/mISDN/timerdev.c:112 do_loop_readv_writev fs/read_write.c:847 [inline] vfs_readv+0x3fb/0x690 fs/read_write.c:1020 do_readv+0xe7/0x210 fs/read_write.c:1080 __do_sys_readv fs/read_write.c:1165 [inline] __se_sys_readv fs/read_write.c:1162 [inline] __x64_sys_readv+0x45/0x50 fs/read_write.c:1162 x64_sys_call+0x2831/0x3000 arch/x86/include/generated/asm/syscalls_64.h:20 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd8/0x2c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f valor cambiado: 0x00000000 -> 0x00000001

14 Feb 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-14 15:16

Updated : 2026-03-18 13:39

NVD link : CVE-2026-23121

Mitre link : CVE-2026-23121

CVE.ORG link : CVE-2026-23121

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo