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.

Classification

CVE ID: CVE-2024-26622

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.06% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/a23ac1788e2c828c097119e9a3178f0b7e503fee
https://git.kernel.org/stable/c/7d930a4da17958f869ef679ee0e4a8729337affc
https://git.kernel.org/stable/c/3bfe04c1273d30b866f4c7c238331ed3b08e5824
https://git.kernel.org/stable/c/2caa605079488da9601099fbda460cfc1702839f
https://git.kernel.org/stable/c/6edefe1b6c29a9932f558a898968a9fcbeec5711
https://git.kernel.org/stable/c/2f03fc340cac9ea1dc63cbf8c93dd2eb0f227815

Timeline