Vulnerability Database

296,869

Total vulnerabilities in the database

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.

  • Published: Feb 26, 2025
  • Updated: May 4, 2025
  • CVE: CVE-2022-49307
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 4.20 5.4.198
linux / linux_kernel 4.10 4.14.283
linux / linux_kernel 4.15 4.19.247
linux / linux_kernel 5.18 5.18.4
linux / linux_kernel 5.16 5.17.15
linux / linux_kernel 5.11 5.15.47
linux / linux_kernel - 4.9.318
linux / linux_kernel 5.5 5.10.122