| 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-2024-36929: net: core: reject skb_copy(_expand) for fraglist GSO skbs |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: core: reject skb_copy(_expand) for fraglist GSO skbs |
| |
| SKB_GSO_FRAGLIST skbs must not be linearized, otherwise they become |
| invalid. Return NULL if such an skb is passed to skb_copy or |
| skb_copy_expand, in order to prevent a crash on a potential later |
| call to skb_gso_segment. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36929 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.6 with commit 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 and fixed in 5.10.217 with commit faa83a7797f06cefed86731ba4baa3b4dfdc06c1 |
| Issue introduced in 5.6 with commit 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 and fixed in 5.15.159 with commit c7af99cc21923a9650533c9d77265c8dd683a533 |
| Issue introduced in 5.6 with commit 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 and fixed in 6.1.91 with commit 989bf6fd1e1d058e73a364dce1a0c53d33373f62 |
| Issue introduced in 5.6 with commit 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 and fixed in 6.6.31 with commit cfe34d86ef9765c388f145039006bb79b6c81ac6 |
| Issue introduced in 5.6 with commit 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 and fixed in 6.8.10 with commit aea5e2669c2863fdd8679c40ee310b3bcaa85aec |
| Issue introduced in 5.6 with commit 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 and fixed in 6.9 with commit d091e579b864fa790dd6a0cd537a22c383126681 |
| |
| 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-2024-36929 |
| 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/core/skbuff.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/faa83a7797f06cefed86731ba4baa3b4dfdc06c1 |
| https://git.kernel.org/stable/c/c7af99cc21923a9650533c9d77265c8dd683a533 |
| https://git.kernel.org/stable/c/989bf6fd1e1d058e73a364dce1a0c53d33373f62 |
| https://git.kernel.org/stable/c/cfe34d86ef9765c388f145039006bb79b6c81ac6 |
| https://git.kernel.org/stable/c/aea5e2669c2863fdd8679c40ee310b3bcaa85aec |
| https://git.kernel.org/stable/c/d091e579b864fa790dd6a0cd537a22c383126681 |
