cbcvebase.
CVE-2022-49307
published 2025-02-26

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…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.29%
21.3th percentile
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] [ 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.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.18.5-1 (bookworm)linux 5.18.5-1 (bookworm)
linuxlinux——
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < 50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < 078212ad15dbd88840c82c97f12c93d83703c8fd078212ad15dbd88840c82c97f12c93d83703c8fd
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < ba08cbc5b53e151d0acf1930fb526fc65b7f3e65ba08cbc5b53e151d0acf1930fb526fc65b7f3e65
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < f6e07eb7ebec53ffe81fc2489589320fbe4a6b75f6e07eb7ebec53ffe81fc2489589320fbe4a6b75
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < d68d5e68b7f64de7170f8e04dd9b995c36b2c71cd68d5e68b7f64de7170f8e04dd9b995c36b2c71c
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < 8a95696bdc0e13f8980f05b54a3b9081963d12568a95696bdc0e13f8980f05b54a3b9081963d1256
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < ddd67751ab86c6a65f95c35293c42f85a42ac05dddd67751ab86c6a65f95c35293c42f85a42ac05d
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < 1ceb4ca9543a8a788febf6bc8dad2e605e172d5e1ceb4ca9543a8a788febf6bc8dad2e605e172d5e
linuxlinux>= 705b6c7b34f2621f95f606d0e683daa10cdb8eb9 < 689ca31c542687709ba21ec2195c1fbce34fd029689ca31c542687709ba21ec2195c1fbce34fd029
linuxlinux_kernel< 4.9.3184.9.318
linuxlinux_kernel>= 0 < 5.10.127-15.10.127-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 0 < 5.18.5-15.18.5-1
linuxlinux_kernel>= 4.10 < 4.14.2834.14.283
linuxlinux_kernel>= 4.15 < 4.19.2474.19.247
linuxlinux_kernel>= 4.20 < 5.4.1985.4.198
linuxlinux_kernel>= 5.11 < 5.15.475.15.47
linuxlinux_kernel>= 5.16 < 5.17.155.17.15
linuxlinux_kernel>= 5.18 < 5.18.45.18.4
linuxlinux_kernel>= 5.5 < 5.10.1225.10.122

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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