| 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-2022-49604: ip: Fix data-races around sysctl_ip_fwd_use_pmtu. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ip: Fix data-races around sysctl_ip_fwd_use_pmtu. |
| |
| While reading sysctl_ip_fwd_use_pmtu, it can be changed concurrently. |
| Thus, we need to add READ_ONCE() to its readers. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49604 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.14 with commit f87c10a8aa1e82498c42d0335524d6ae7cf5a52b and fixed in 4.19.254 with commit eb15262128b793e4b1d1c4514d3e6d19c3959764 |
| Issue introduced in 3.14 with commit f87c10a8aa1e82498c42d0335524d6ae7cf5a52b and fixed in 5.4.208 with commit 7828309df0f89419a9349761a37c7d1b0da45697 |
| Issue introduced in 3.14 with commit f87c10a8aa1e82498c42d0335524d6ae7cf5a52b and fixed in 5.10.134 with commit b96ed5ccb09ae71103023ed13acefb194f609794 |
| Issue introduced in 3.14 with commit f87c10a8aa1e82498c42d0335524d6ae7cf5a52b and fixed in 5.15.58 with commit 93fbc06da1d819f3981a7bd7928c3641ea67b364 |
| Issue introduced in 3.14 with commit f87c10a8aa1e82498c42d0335524d6ae7cf5a52b and fixed in 5.18.15 with commit e364b5f6ffbfc457a997ad09a7baa16c19581edc |
| Issue introduced in 3.14 with commit f87c10a8aa1e82498c42d0335524d6ae7cf5a52b and fixed in 5.19 with commit 60c158dc7b1f0558f6cadd5b50d0386da0000d50 |
| |
| 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-2022-49604 |
| 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: |
| include/net/ip.h |
| net/ipv4/route.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/eb15262128b793e4b1d1c4514d3e6d19c3959764 |
| https://git.kernel.org/stable/c/7828309df0f89419a9349761a37c7d1b0da45697 |
| https://git.kernel.org/stable/c/b96ed5ccb09ae71103023ed13acefb194f609794 |
| https://git.kernel.org/stable/c/93fbc06da1d819f3981a7bd7928c3641ea67b364 |
| https://git.kernel.org/stable/c/e364b5f6ffbfc457a997ad09a7baa16c19581edc |
| https://git.kernel.org/stable/c/60c158dc7b1f0558f6cadd5b50d0386da0000d50 |
