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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < 50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0daffected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < 078212ad15dbd88840c82c97f12c93d83703c8fdaffected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < ba08cbc5b53e151d0acf1930fb526fc65b7f3e65affected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < f6e07eb7ebec53ffe81fc2489589320fbe4a6b75affected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < d68d5e68b7f64de7170f8e04dd9b995c36b2c71caffected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < 8a95696bdc0e13f8980f05b54a3b9081963d1256affected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < ddd67751ab86c6a65f95c35293c42f85a42ac05daffected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < 1ceb4ca9543a8a788febf6bc8dad2e605e172d5eaffected705b6c7b34f2621f95f606d0e683daa10cdb8eb9 to < 689ca31c542687709ba21ec2195c1fbce34fd029affected
Linux Linux
Default version status: affected
2.6.16affected0 to < 2.6.16unaffected4.9.318 to ≤ 4.9.*unaffected4.14.283 to ≤ 4.14.*unaffected4.19.247 to ≤ 4.19.*unaffected5.4.198 to ≤ 5.4.*unaffected5.10.122 to ≤ 5.10.*unaffected5.15.47 to ≤ 5.15.*unaffected5.17.15 to ≤ 5.17.*unaffected5.18.4 to ≤ 5.18.*unaffected5.19 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d ↗
- https://git.kernel.org/stable/c/078212ad15dbd88840c82c97f12c93d83703c8fd ↗
- https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65 ↗
- https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75 ↗
- https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c ↗
- https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256 ↗
- https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d ↗
- https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e ↗
- https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029 ↗