tomoyo: fix UAF write bug in tomoyo_write_control()
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26622.json
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/IVVYSTEVMPYGF6GDSOD44MUXZXAZHOHB/
- https://nvd.nist.gov/vuln/detail/CVE-2024-26622