tomoyo: fix UAF write bug in tomoyo_write_control()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 87% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/2caa605079488da9601099fbda460cfc1702839fhttps://git.kernel.org/stable/c/2f03fc340cac9ea1dc63cbf8c93dd2eb0f227815https://git.kernel.org/stable/c/3bfe04c1273d30b866f4c7c238331ed3b08e5824https://git.kernel.org/stable/c/6edefe1b6c29a9932f558a898968a9fcbeec5711https://git.kernel.org/stable/c/7d930a4da17958f869ef679ee0e4a8729337affchttps://git.kernel.org/stable/c/a23ac1788e2c828c097119e9a3178f0b7e503feehttps://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IVVYSTEVMPYGF6GDSOD44MUXZXAZHOHB/