CVE-2024-26622

HIGH
Published Mar 4, 2024 Modified Nov 4, 2025 CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: tomoyo: fix UAF write bug in tomoyo_write_control() Since tomoyo_write_control() updates head->write_buf when write() of long lines is requested, we need to fetch head->write_buf after head->io_sem is held. Otherwise, concurrent write() requests can cause use-after-free-write and double-free problems.

Is your site exposed to CVE-2024-26622?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/2caa605079488da9601099fbda460cfc1702839f https://git.kernel.org/stable/c/2f03fc340cac9ea1dc63cbf8c93dd2eb0f227815 https://git.kernel.org/stable/c/3bfe04c1273d30b866f4c7c238331ed3b08e5824 https://git.kernel.org/stable/c/6edefe1b6c29a9932f558a898968a9fcbeec5711 https://git.kernel.org/stable/c/7d930a4da17958f869ef679ee0e4a8729337affc https://git.kernel.org/stable/c/a23ac1788e2c828c097119e9a3178f0b7e503fee https://git.kernel.org/stable/c/2caa605079488da9601099fbda460cfc1702839f https://git.kernel.org/stable/c/2f03fc340cac9ea1dc63cbf8c93dd2eb0f227815 https://git.kernel.org/stable/c/3bfe04c1273d30b866f4c7c238331ed3b08e5824 https://git.kernel.org/stable/c/6edefe1b6c29a9932f558a898968a9fcbeec5711 https://git.kernel.org/stable/c/7d930a4da17958f869ef679ee0e4a8729337affc https://git.kernel.org/stable/c/a23ac1788e2c828c097119e9a3178f0b7e503fee https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

Frequently Asked Questions

What is CVE-2024-26622? +
In the Linux kernel, the following vulnerability has been resolved: tomoyo: fix UAF write bug in tomoyo_write_control() Since tomoyo_write_control() updates head->write_buf when write() of long lines is requested, we need to fetch head->write_buf after head->io_sem is held. Otherwise, concurrent write() requests can cause use-after-free-write and double-free problems. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2024-26622? +
CVE-2024-26622 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-26622? +
CVE-2024-26622 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-2024-26622? +
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.

Related Vulnerabilities

CVE-2026-55406

Buffa is a pure-Rust Protocol Buffers implementation with first-class protobuf editions support. Prior to 0.7.0, a soundness bug in the …
CVE-2026-6040

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the …
CVE-2025-24898

rust-openssl is a set of OpenSSL bindings for the Rust programming language. In affected versions `ssl::select_next_proto` can return a slice …
CVE-2025-31115

XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder …
CVE-2025-31498

c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in read_answers() when process_answer() may re-enqueue …
CVE-2025-4516

There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an …

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2024-26622 — free, no signup required.