| 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-2024-36903: ipv6: Fix potential uninit-value access in __ip6_make_skb() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipv6: Fix potential uninit-value access in __ip6_make_skb() |
| |
| As it was done in commit fc1092f51567 ("ipv4: Fix uninit-value access in |
| __ip_make_skb()") for IPv4, check FLOWI_FLAG_KNOWN_NH on fl6->flowi6_flags |
| instead of testing HDRINCL on the socket to avoid a race condition which |
| causes uninit-value access. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36903 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1.24 with commit 2c9cefc142c1dc2759e19a92d3b2b3715e985beb and fixed in 6.1.140 with commit a05c1ede50e9656f0752e523c7b54f3a3489e9a8 |
| Issue introduced in 6.3 with commit ea30388baebcce37fd594d425a65037ca35e59e8 and fixed in 6.6.31 with commit 68c8ba16ab712eb709c6bab80ff151079d11d97a |
| Issue introduced in 6.3 with commit ea30388baebcce37fd594d425a65037ca35e59e8 and fixed in 6.8.10 with commit 2367bf254f3a27ecc6e229afd7a8b0a1395f7be3 |
| Issue introduced in 6.3 with commit ea30388baebcce37fd594d425a65037ca35e59e8 and fixed in 6.9 with commit 4e13d3a9c25b7080f8a619f961e943fe08c2672c |
| Issue introduced in 4.14.313 with commit 165370522cc48127da564a08584a7391e6341908 |
| Issue introduced in 4.19.281 with commit f394f690a30a5ec0413c62777a058eaf3d6e10d5 |
| Issue introduced in 5.4.241 with commit 0cf600ca1bdf1d52df977516ee6cee0cadb1f6b1 |
| Issue introduced in 5.10.178 with commit 605b056d63302ae84eb136e88d4df49124bd5e0d |
| Issue introduced in 5.15.107 with commit d65ff2fe877c471aa6e79efa7bd8ff66e147c317 |
| Issue introduced in 6.2.11 with commit 02ed5700f40445af02d1c97db25ffc2d04971d9f |
| |
| 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-2024-36903 |
| 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/ip6_output.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/a05c1ede50e9656f0752e523c7b54f3a3489e9a8 |
| https://git.kernel.org/stable/c/68c8ba16ab712eb709c6bab80ff151079d11d97a |
| https://git.kernel.org/stable/c/2367bf254f3a27ecc6e229afd7a8b0a1395f7be3 |
| https://git.kernel.org/stable/c/4e13d3a9c25b7080f8a619f961e943fe08c2672c |
