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Message-ID: <2024022544-CVE-2023-52467-434b@gregkh> Date: Sun, 25 Feb 2024 09:16:45 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2023-52467: mfd: syscon: Fix null pointer dereference in of_syscon_register() Description =========== In the Linux kernel, the following vulnerability has been resolved: mfd: syscon: Fix null pointer dereference in of_syscon_register() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. The Linux kernel CVE team has assigned CVE-2023-52467 to this issue. Affected and fixed versions =========================== Issue introduced in 5.9 with commit e15d7f2b81d2 and fixed in 5.10.209 with commit 927626a20738 Issue introduced in 5.9 with commit e15d7f2b81d2 and fixed in 5.15.148 with commit c3e3a2144bf5 Issue introduced in 5.9 with commit e15d7f2b81d2 and fixed in 6.1.75 with commit 527e8c5f3d00 Issue introduced in 5.9 with commit e15d7f2b81d2 and fixed in 6.6.14 with commit 3ef1130deee9 Issue introduced in 5.9 with commit e15d7f2b81d2 and fixed in 6.7.2 with commit 7f2c410ac470 Issue introduced in 5.9 with commit e15d7f2b81d2 and fixed in 6.8-rc1 with commit 41673c66b3d0 Please see https://www.kernel.org or a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2023-52467 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/mfd/syscon.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/927626a2073887ee30ba00633260d4d203f8e875 https://git.kernel.org/stable/c/c3e3a2144bf50877551138ffce9f7aa6ddfe385b https://git.kernel.org/stable/c/527e8c5f3d00299822612c495d5adf1f8f43c001 https://git.kernel.org/stable/c/3ef1130deee98997275904d9bfc37af75e1e906c https://git.kernel.org/stable/c/7f2c410ac470959b88e03dadd94b7a0b71df7973 https://git.kernel.org/stable/c/41673c66b3d0c09915698fec5c13b24336f18dd1
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