CVE-2024-50148: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: fix wild-memory-access in proto_unregister There's issue as follows: KASAN: maybe wild-memory-access in range [0xdead...108-0xdead...10f] CPU: 3 UID: 0 PID: 2805 Comm: rmmod Tainted: G W RIP: 0010:proto_unregister+0xee/0x400 Call Trace: <TASK> __do_sys_delete_module+0x318/0x580 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f As bnep_init() ignore bnep_sock_init()'s return value, and bnep_sock_init() will cleanup all resource. Then when remove bnep module will call bnep_sock_cleanup() to cleanup sock's resource. To solve above issue just return bnep_sock_init()'s return value in bnep_exit().

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	2.6.12 — 4.19.323
linux	linux_kernel	4.20 — 5.4.285
linux	linux_kernel	5.5 — 5.10.229
linux	linux_kernel	5.11 — 5.15.170
linux	linux_kernel	5.16 — 6.1.115
linux	linux_kernel	6.2 — 6.6.59
linux	linux_kernel	6.7 — 6.11.6
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/03015b6329e6de42f03ec917c25c4cf944f81f66 https://git.kernel.org/stable/c/20c424bc475b2b2a6e0e2225d2aae095c2ab2f41 https://git.kernel.org/stable/c/2c439470b23d78095a0d2f923342df58b155f669 https://git.kernel.org/stable/c/64a90991ba8d4e32e3173ddd83d0b24167a5668c https://git.kernel.org/stable/c/6c151aeb6dc414db8f4daf51be072e802fae6667 https://git.kernel.org/stable/c/d10cd7bf574ead01fae140ce117a11bcdacbe6a8 https://git.kernel.org/stable/c/e232728242c4e98fb30e4c6bedb6ba8b482b6301 https://git.kernel.org/stable/c/fa58e23ea1359bd24b323916d191e2e9b4b19783

Other References

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html https://cert-portal.siemens.com/productcert/html/ssa-265688.html

Frequently Asked Questions

What is CVE-2024-50148? +

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: fix wild-memory-access in proto_unregister There's issue as follows: KASAN: maybe wild-memory-access in range [0xdead...108-0xdead...10f] CPU: 3 UID: 0 PID: 2805 Comm: rmmod Tainted: G W RIP: 0010:proto_unregister+0xee/0x400 Call Trace: <TASK> __do_sys_delete_module+0x318/0x580 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f As bnep_init() ignore bnep_sock_init()'s return value, and bnep_sock_init() will cleanup all resource. Then when remove bnep module will call bnep_sock_cleanup() to cleanup sock's resource. To solve above issue just return bnep_sock_init()'s return value in bnep_exit(). It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-50148? +

CVE-2024-50148 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-50148? +

CVE-2024-50148 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-50148? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-50148