CVE-2022-49307

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49307
In the Linux kernel, the following vulnerability has been resolved: tty: synclink_gt: Fix null-pointer-dereference in slgt_clean() When the driver fails at alloc_hdlcdev(), and then we remove the driver module, we will get the following splat: [ 25.065966] general protection fault, probably for non-canonical address 0xdffffc0000000182: 0000 [#1] PREEMPT SMP KASAN PTI [ 25.066914] KASAN: null-ptr-deref in range [0x0000000000000c10-0x0000000000000c17] [ 25.069262] RIP: 0010:detach_hdlc_protocol+0x2a/0x3e0 [ 25.077709] Call Trace: [ 25.077924] <TASK> [ 25.078108] unregister_hdlc_device+0x16/0x30 [ 25.078481] slgt_cleanup+0x157/0x9f0 [synclink_gt] Fix this by checking whether the 'info->netdev' is a null pointer first.

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/078212ad15dbd88840c82c97f12c93d83703c8fd Patch
https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e Patch
https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d Patch
https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029 Patch
https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256 Patch
https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65 Patch
https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c Patch
https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d Patch
https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

17 Mar 2025, 19:58

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: synclink_gt: Fix null-pointer-dereference in slgt_clean() Cuando el controlador falla en alloc_hdlcdev() y luego eliminamos el módulo del controlador, obtendremos el siguiente splat: [ 25.065966] error de protección general, probablemente para la dirección no canónica 0xdffffc0000000182: 0000 [#1] PREEMPT SMP KASAN PTI [ 25.066914] KASAN: null-ptr-deref en el rango [0x000000000000c10-0x0000000000000c17] [ 25.069262] RIP: 0010:detach_hdlc_protocol+0x2a/0x3e0 [ 25.077709] Seguimiento de llamadas: [ 25.077924] [ 25.078108] unregister_hdlc_device+0x16/0x30 [ 25.078481] slgt_cleanup+0x157/0x9f0 [synclink_gt] Solucione esto comprobando primero si 'info-&gt;netdev' es un puntero nulo.
References () https://git.kernel.org/stable/c/078212ad15dbd88840c82c97f12c93d83703c8fd - () https://git.kernel.org/stable/c/078212ad15dbd88840c82c97f12c93d83703c8fd - Patch
References () https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e - () https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e - Patch
References () https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d - () https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d - Patch
References () https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029 - () https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029 - Patch
References () https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256 - () https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256 - Patch
References () https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65 - () https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65 - Patch
References () https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c - () https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c - Patch
References () https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d - () https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d - Patch
References () https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75 - () https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-476

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-03-17 19:58

NVD link : CVE-2022-49307

Mitre link : CVE-2022-49307

CVE.ORG link : CVE-2022-49307

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference