CVE-2022-49307
Synclink GT Linux Kernel Null Pointer Dereference Vulnerability
Description
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.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
March 17, 2025, 7:58 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49307.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-49307 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49307 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.198 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.283 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.247 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 up to (excluding) 5.18.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.17.15 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.47 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.9.318 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.122 Added Reference Type kernel.org: https://git.kernel.org/stable/c/078212ad15dbd88840c82c97f12c93d83703c8fd Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/078212ad15dbd88840c82c97f12c93d83703c8fd Added Reference https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e Added Reference https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d Added Reference https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029 Added Reference https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256 Added Reference https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65 Added Reference https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c Added Reference https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d Added Reference https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49307 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49307
weaknesses.