| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <2024022253-CVE-2023-52445-07a6@gregkh> Date: Thu, 22 Feb 2024 17:21:53 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2023-52445: media: pvrusb2: fix use after free on context disconnection Description =========== In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix use after free on context disconnection Upon module load, a kthread is created targeting the pvr2_context_thread_func function, which may call pvr2_context_destroy and thus call kfree() on the context object. However, that might happen before the usb hub_event handler is able to notify the driver. This patch adds a sanity check before the invalid read reported by syzbot, within the context disconnection call stack. The Linux kernel CVE team has assigned CVE-2023-52445 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 4.19.306 with commit ec36c134dd02 Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 5.4.268 with commit 47aa8fcd5e8b Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 5.10.209 with commit 3233d8bf7893 Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 5.15.148 with commit ec3634ebe23f Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 6.1.75 with commit 30773ea47d41 Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 6.6.14 with commit 2cf0005d3155 Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 6.7.2 with commit 437b5f57732b Issue introduced in 2.6.26 with commit e5be15c63804 and fixed in 6.8-rc1 with commit ded85b0c0edd 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-2023-52445 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/media/usb/pvrusb2/pvrusb2-context.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/ec36c134dd020d28e312c2f1766f85525e747aab https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb https://git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08 https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795 https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c https://git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1
Powered by blists - more mailing lists