In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opal_event_init() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.
git.kernel.org/linus/8649829a1dd25199bbf557b2621cedb4bf9b3050
git.kernel.org/stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
git.kernel.org/stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
git.kernel.org/stable/c/e08c2e275fa1874de945b87093f925997722ee42
git.kernel.org/stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf
git.kernel.org/stable/c/e93d7cf4c1ddbcd846739e7ad849f955a4f18031
ubuntu.com/security/CVE-2023-52686
ubuntu.com/security/notices/USN-6818-1
ubuntu.com/security/notices/USN-6818-2
ubuntu.com/security/notices/USN-6818-3
ubuntu.com/security/notices/USN-6818-4
ubuntu.com/security/notices/USN-6819-1
ubuntu.com/security/notices/USN-6819-2
ubuntu.com/security/notices/USN-6819-3
ubuntu.com/security/notices/USN-6819-4
www.cve.org/CVERecord?id=CVE-2023-52686