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CVE-2022-49307

MEDIUM

5.5

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.

Details CVE

Score CVSS v3.15.5

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueLOCAL

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie2/26/2025

Derniere modification10/1/2025

Sourcenvd

Observations honeypot0

Produits affectes

linux:linux_kernel

Faiblesses (CWE)

CWE-476CWE-476

References

https://git.kernel.org/stable/c/078212ad15dbd88840c82c97f12c93d83703c8fd(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/1ceb4ca9543a8a788febf6bc8dad2e605e172d5e(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/50c341f9a2adc4c32a8ad5a39eb99d9c4a419e0d(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/689ca31c542687709ba21ec2195c1fbce34fd029(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/8a95696bdc0e13f8980f05b54a3b9081963d1256(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/ba08cbc5b53e151d0acf1930fb526fc65b7f3e65(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/d68d5e68b7f64de7170f8e04dd9b995c36b2c71c(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/ddd67751ab86c6a65f95c35293c42f85a42ac05d(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/f6e07eb7ebec53ffe81fc2489589320fbe4a6b75(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Correlations IOC

Aucune correlation enregistree

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