| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-41081: ila: block BH in ila_output() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ila: block BH in ila_output() |
| |
| As explained in commit 1378817486d6 ("tipc: block BH |
| before using dst_cache"), net/core/dst_cache.c |
| helpers need to be called with BH disabled. |
| |
| ila_output() is called from lwtunnel_output() |
| possibly from process context, and under rcu_read_lock(). |
| |
| We might be interrupted by a softirq, re-enter ila_output() |
| and corrupt dst_cache data structures. |
| |
| Fix the race by using local_bh_disable(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-41081 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 4.19.319 with commit 7435bd2f84a25aba607030237261b3795ba782da |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 5.4.281 with commit 96103371091c6476eb07f4c66624bdd1b42f758a |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 5.10.223 with commit a0cafb7b0b94d18e4813ee4b712a056f280e7b5a |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 5.15.164 with commit feac2391e26b086f73be30e9b1ab215eada8d830 |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 6.1.101 with commit b4eb25a3d70df925a9fa4e82d17a958a0a228f5f |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 6.6.42 with commit 522c3336c2025818fa05e9daf0ac35711e55e316 |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 6.9.11 with commit 9f9c79d8e527d867e0875868b14fb76e6011e70c |
| Issue introduced in 4.10 with commit 79ff2fc31e0f6a52eeb67fb89fba87e822b9b7b5 and fixed in 6.10 with commit cf28ff8e4c02e1ffa850755288ac954b6ff0db8c |
| |
| 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-2024-41081 |
| 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: |
| net/ipv6/ila/ila_lwt.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/7435bd2f84a25aba607030237261b3795ba782da |
| https://git.kernel.org/stable/c/96103371091c6476eb07f4c66624bdd1b42f758a |
| https://git.kernel.org/stable/c/a0cafb7b0b94d18e4813ee4b712a056f280e7b5a |
| https://git.kernel.org/stable/c/feac2391e26b086f73be30e9b1ab215eada8d830 |
| https://git.kernel.org/stable/c/b4eb25a3d70df925a9fa4e82d17a958a0a228f5f |
| https://git.kernel.org/stable/c/522c3336c2025818fa05e9daf0ac35711e55e316 |
| https://git.kernel.org/stable/c/9f9c79d8e527d867e0875868b14fb76e6011e70c |
| https://git.kernel.org/stable/c/cf28ff8e4c02e1ffa850755288ac954b6ff0db8c |
