| 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-2024-41044: ppp: reject claimed-as-LCP but actually malformed packets |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ppp: reject claimed-as-LCP but actually malformed packets |
| |
| Since 'ppp_async_encode()' assumes valid LCP packets (with code |
| from 1 to 7 inclusive), add 'ppp_check_packet()' to ensure that |
| LCP packet has an actual body beyond PPP_LCP header bytes, and |
| reject claimed-as-LCP but actually malformed data otherwise. |
| |
| The Linux kernel CVE team has assigned CVE-2024-41044 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 4.19.318 with commit 97d1efd8be26615ff680cdde86937d5943138f37 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.4.280 with commit 6e8f1c21174f9482033bbb59f13ce1a8cbe843c3 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.10.222 with commit 3ba12c2afd933fc1bf800f6d3f6c7ec8f602ce56 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.15.163 with commit ebc5c630457783d17d0c438b0ad70b232a64a82f |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.1.100 with commit 3134bdf7356ed952dcecb480861d2afcc1e40492 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.6.41 with commit 099502ca410922b56353ccef2749bc0de669da78 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.9.10 with commit d683e7f3fc48f59576af34631b4fb07fd931343e |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.10 with commit f2aeb7306a898e1cbd03963d376f4b6656ca2b55 |
| |
| 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-2024-41044 |
| 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/net/ppp/ppp_generic.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/97d1efd8be26615ff680cdde86937d5943138f37 |
| https://git.kernel.org/stable/c/6e8f1c21174f9482033bbb59f13ce1a8cbe843c3 |
| https://git.kernel.org/stable/c/3ba12c2afd933fc1bf800f6d3f6c7ec8f602ce56 |
| https://git.kernel.org/stable/c/ebc5c630457783d17d0c438b0ad70b232a64a82f |
| https://git.kernel.org/stable/c/3134bdf7356ed952dcecb480861d2afcc1e40492 |
| https://git.kernel.org/stable/c/099502ca410922b56353ccef2749bc0de669da78 |
| https://git.kernel.org/stable/c/d683e7f3fc48f59576af34631b4fb07fd931343e |
| https://git.kernel.org/stable/c/f2aeb7306a898e1cbd03963d376f4b6656ca2b55 |
