| 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-2024-27393: xen-netfront: Add missing skb_mark_for_recycle |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| xen-netfront: Add missing skb_mark_for_recycle |
| |
| Notice that skb_mark_for_recycle() is introduced later than fixes tag in |
| commit 6a5bcd84e886 ("page_pool: Allow drivers to hint on SKB recycling"). |
| |
| It is believed that fixes tag were missing a call to page_pool_release_page() |
| between v5.9 to v5.14, after which is should have used skb_mark_for_recycle(). |
| Since v6.6 the call page_pool_release_page() were removed (in |
| commit 535b9c61bdef ("net: page_pool: hide page_pool_release_page()") |
| and remaining callers converted (in commit 6bfef2ec0172 ("Merge branch |
| 'net-page_pool-remove-page_pool_release_page'")). |
| |
| This leak became visible in v6.8 via commit dba1b8a7ab68 ("mm/page_pool: catch |
| page_pool memory leaks"). |
| |
| The Linux kernel CVE team has assigned CVE-2024-27393 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.9 with commit 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and fixed in 5.15.154 with commit 4143b9479caa29bb2380f3620dcbe16ea84eb3b1 |
| Issue introduced in 5.9 with commit 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and fixed in 6.1.85 with commit 7c1250796b6c262b505a46192f4716b8c6a6a8c6 |
| Issue introduced in 5.9 with commit 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and fixed in 6.6.26 with commit 27aa3e4b3088426b7e34584274ad45b5afaf7629 |
| Issue introduced in 5.9 with commit 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and fixed in 6.8.5 with commit c8b7b2f158d9d4fb89cd2f68244af154f7549bb4 |
| Issue introduced in 5.9 with commit 6c5aa6fc4defc2a0977a2c59e4710d50fa1e834c and fixed in 6.9 with commit 037965402a010898d34f4e35327d22c0a95cd51f |
| |
| 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-2024-27393 |
| 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/xen-netfront.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/4143b9479caa29bb2380f3620dcbe16ea84eb3b1 |
| https://git.kernel.org/stable/c/7c1250796b6c262b505a46192f4716b8c6a6a8c6 |
| https://git.kernel.org/stable/c/27aa3e4b3088426b7e34584274ad45b5afaf7629 |
| https://git.kernel.org/stable/c/c8b7b2f158d9d4fb89cd2f68244af154f7549bb4 |
| https://git.kernel.org/stable/c/037965402a010898d34f4e35327d22c0a95cd51f |
