| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-26606: binder: signal epoll threads of self-work |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| binder: signal epoll threads of self-work |
| |
| In (e)poll mode, threads often depend on I/O events to determine when |
| data is ready for consumption. Within binder, a thread may initiate a |
| command via BINDER_WRITE_READ without a read buffer and then make use |
| of epoll_wait() or similar to consume any responses afterwards. |
| |
| It is then crucial that epoll threads are signaled via wakeup when they |
| queue their own work. Otherwise, they risk waiting indefinitely for an |
| event leaving their work unhandled. What is worse, subsequent commands |
| won't trigger a wakeup either as the thread has pending work. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26606 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 4.19.307 with commit dd64bb8329ce0ea27bc557e4160c2688835402ac |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 5.4.269 with commit 42beab162dcee1e691ee4934292d51581c29df61 |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 5.10.210 with commit a423042052ec2bdbf1e552e621e6a768922363cc |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 5.15.149 with commit 82722b453dc2f967b172603e389ee7dc1b3137cc |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 6.1.79 with commit 90e09c016d72b91e76de25f71c7b93d94cc3c769 |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 6.6.18 with commit a7ae586f6f6024f490b8546c8c84670f96bb9b68 |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 6.7.6 with commit 93b372c39c40cbf179e56621e6bc48240943af69 |
| Issue introduced in 2.6.29 with commit 457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 and fixed in 6.8 with commit 97830f3c3088638ff90b20dfba2eb4d487bf14d7 |
| |
| Please see https://www.kernel.org for 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-2024-26606 |
| 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/android/binder.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/dd64bb8329ce0ea27bc557e4160c2688835402ac |
| https://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61 |
| https://git.kernel.org/stable/c/a423042052ec2bdbf1e552e621e6a768922363cc |
| https://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc |
| https://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769 |
| https://git.kernel.org/stable/c/a7ae586f6f6024f490b8546c8c84670f96bb9b68 |
| https://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69 |
| https://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7 |
