| 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-2024-46799: net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: ethernet: ti: am65-cpsw: Fix NULL dereference on XDP_TX |
| |
| If number of TX queues are set to 1 we get a NULL pointer |
| dereference during XDP_TX. |
| |
| ~# ethtool -L eth0 tx 1 |
| ~# ./xdp-trafficgen udp -A <ipv6-src> -a <ipv6-dst> eth0 -t 2 |
| Transmitting on eth0 (ifindex 2) |
| [ 241.135257] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030 |
| |
| Fix this by using actual TX queues instead of max TX queues |
| when picking the TX channel in am65_cpsw_ndo_xdp_xmit(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-46799 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit 8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 and fixed in 6.10.10 with commit 2e7189d2b1de51fc2567676cd4f96c0fe0960b9f |
| Issue introduced in 6.10 with commit 8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 and fixed in 6.11 with commit 0a50c35277f96481a5a6ed5faf347f282040c57d |
| |
| 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-2024-46799 |
| 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/ethernet/ti/am65-cpsw-nuss.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/2e7189d2b1de51fc2567676cd4f96c0fe0960b9f |
| https://git.kernel.org/stable/c/0a50c35277f96481a5a6ed5faf347f282040c57d |
