| 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-2024-38612: ipv6: sr: fix invalid unregister error path |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipv6: sr: fix invalid unregister error path |
| |
| The error path of seg6_init() is wrong in case CONFIG_IPV6_SEG6_LWTUNNEL |
| is not defined. In that case if seg6_hmac_init() fails, the |
| genl_unregister_family() isn't called. |
| |
| This issue exist since commit 46738b1317e1 ("ipv6: sr: add option to control |
| lwtunnel support"), and commit 5559cea2d5aa ("ipv6: sr: fix possible |
| use-after-free and null-ptr-deref") replaced unregister_pernet_subsys() |
| with genl_unregister_family() in this error path. |
| |
| The Linux kernel CVE team has assigned CVE-2024-38612 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 4.19.316 with commit 10610575a3ac2a702bf5c57aa931beaf847949c7 |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 5.4.278 with commit 646cd236c55e2cb5f146fc41bbe4034c4af5b2a4 |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 5.10.219 with commit 00e6335329f23ac6cf3105931691674e28bc598c |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 5.15.161 with commit 1a63730fb315bb1bab97edd69ff58ad45e04bb01 |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 6.1.93 with commit e77a3ec7ada84543e75722a1283785a6544de925 |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 6.6.33 with commit 3398a40dccb88d3a7eef378247a023a78472db66 |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 6.8.12 with commit 85a70ff1e572160f1eeb096ed48d09a1c9d4d89a |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 6.9.3 with commit c04d6a914e890ccea4a9d11233009a2ee7978bf4 |
| Issue introduced in 4.10 with commit 46738b1317e169b281ad74690276916e24d1be6d and fixed in 6.10 with commit 160e9d2752181fcf18c662e74022d77d3164cd45 |
| |
| 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-2024-38612 |
| 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/seg6.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/10610575a3ac2a702bf5c57aa931beaf847949c7 |
| https://git.kernel.org/stable/c/646cd236c55e2cb5f146fc41bbe4034c4af5b2a4 |
| https://git.kernel.org/stable/c/00e6335329f23ac6cf3105931691674e28bc598c |
| https://git.kernel.org/stable/c/1a63730fb315bb1bab97edd69ff58ad45e04bb01 |
| https://git.kernel.org/stable/c/e77a3ec7ada84543e75722a1283785a6544de925 |
| https://git.kernel.org/stable/c/3398a40dccb88d3a7eef378247a023a78472db66 |
| https://git.kernel.org/stable/c/85a70ff1e572160f1eeb096ed48d09a1c9d4d89a |
| https://git.kernel.org/stable/c/c04d6a914e890ccea4a9d11233009a2ee7978bf4 |
| https://git.kernel.org/stable/c/160e9d2752181fcf18c662e74022d77d3164cd45 |
