CVE-2024-26950

MEDIUM
Published May 1, 2024 Modified May 12, 2026 CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: wireguard: netlink: access device through ctx instead of peer The previous commit fixed a bug that led to a NULL peer->device being dereferenced. It's actually easier and faster performance-wise to instead get the device from ctx->wg. This semantically makes more sense too, since ctx->wg->peer_allowedips.seq is compared with ctx->allowedips_seq, basing them both in ctx. This also acts as a defence in depth provision against freed peers.

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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

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/09c3fa70f65175861ca948cb2f0f791e666c90e5 https://git.kernel.org/stable/c/493aa6bdcffd90a4f82aa614fe4f4db0641b4068 https://git.kernel.org/stable/c/4be453271a882c8ebc28df3dbf9e4d95e6ac42f5 https://git.kernel.org/stable/c/71cbd32e3db82ea4a74e3ef9aeeaa6971969c86f https://git.kernel.org/stable/c/93bcc1752c69bb309f4d8cfaf960ef1faeb34996 https://git.kernel.org/stable/c/c991567e6c638079304cc15dff28748e4a3c4a37 https://git.kernel.org/stable/c/d44bd323d8bb8031eef4bdc44547925998a11e47 https://git.kernel.org/stable/c/09c3fa70f65175861ca948cb2f0f791e666c90e5 https://git.kernel.org/stable/c/493aa6bdcffd90a4f82aa614fe4f4db0641b4068 https://git.kernel.org/stable/c/4be453271a882c8ebc28df3dbf9e4d95e6ac42f5 https://git.kernel.org/stable/c/71cbd32e3db82ea4a74e3ef9aeeaa6971969c86f https://git.kernel.org/stable/c/93bcc1752c69bb309f4d8cfaf960ef1faeb34996 https://git.kernel.org/stable/c/c991567e6c638079304cc15dff28748e4a3c4a37 https://git.kernel.org/stable/c/d44bd323d8bb8031eef4bdc44547925998a11e47

Frequently Asked Questions

What is CVE-2024-26950? +
In the Linux kernel, the following vulnerability has been resolved: wireguard: netlink: access device through ctx instead of peer The previous commit fixed a bug that led to a NULL peer->device being dereferenced. It's actually easier and faster performance-wise to instead get the device from ctx->wg. This semantically makes more sense too, since ctx->wg->peer_allowedips.seq is compared with ctx->allowedips_seq, basing them both in ctx. This also acts as a defence in depth provision against freed peers. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-26950? +
CVE-2024-26950 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-2024-26950? +
CVE-2024-26950 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26950? +
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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