| 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: <2024022826-CVE-2021-46994-4722@gregkh> Date: Wed, 28 Feb 2024 09:14:44 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: gregkh@...nel.org Subject: CVE-2021-46994: can: mcp251x: fix resume from sleep before interface was brought up From: gregkh@...nel.org Description =========== In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the driver queues work via priv->restart_work when resuming after suspend, even when the interface was not previously enabled. This causes a null dereference error as the workqueue is only allocated and initialized in mcp251x_open(). To fix this we move the workqueue init to mcp251x_can_probe() as there is no reason to do it later and repeat it whenever mcp251x_open() is called. [mkl: fix error handling in mcp251x_stop()] The Linux kernel CVE team has assigned CVE-2021-46994 to this issue. Affected and fixed versions =========================== Issue introduced in 5.5 with commit 8ce8c0abcba3 and fixed in 5.10.38 with commit eecb4df8ec9f Issue introduced in 5.5 with commit 8ce8c0abcba3 and fixed in 5.11.22 with commit 6f8f1c27b577 Issue introduced in 5.5 with commit 8ce8c0abcba3 and fixed in 5.12.5 with commit e1e10a390fd9 Issue introduced in 5.5 with commit 8ce8c0abcba3 and fixed in 5.13 with commit 03c427147b2d 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-2021-46994 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/net/can/spi/mcp251x.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/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21 https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af
Powered by blists - more mailing lists