| 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-2024-40937: gve: Clear napi->skb before dev_kfree_skb_any() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| gve: Clear napi->skb before dev_kfree_skb_any() |
| |
| gve_rx_free_skb incorrectly leaves napi->skb referencing an skb after it |
| is freed with dev_kfree_skb_any(). This can result in a subsequent call |
| to napi_get_frags returning a dangling pointer. |
| |
| Fix this by clearing napi->skb before the skb is freed. |
| |
| The Linux kernel CVE team has assigned CVE-2024-40937 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.14 with commit 9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 and fixed in 5.15.162 with commit 75afd8724739ee5ed8165acde5f6ac3988b485cc |
| Issue introduced in 5.14 with commit 9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 and fixed in 6.1.95 with commit d221284991118c0ab16480b53baecd857c0bc442 |
| Issue introduced in 5.14 with commit 9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 and fixed in 6.6.35 with commit 2ce5341c36993b776012601921d7688693f8c037 |
| Issue introduced in 5.14 with commit 9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 and fixed in 6.9.6 with commit a68184d5b420ea4fc7e6b7ceb52bbc66f90d3c50 |
| Issue introduced in 5.14 with commit 9b8dd5e5ea48bbb7532d20c4093a79d8283e4029 and fixed in 6.10 with commit 6f4d93b78ade0a4c2cafd587f7b429ce95abb02e |
| |
| 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-2024-40937 |
| 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/google/gve/gve_rx_dqo.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/75afd8724739ee5ed8165acde5f6ac3988b485cc |
| https://git.kernel.org/stable/c/d221284991118c0ab16480b53baecd857c0bc442 |
| https://git.kernel.org/stable/c/2ce5341c36993b776012601921d7688693f8c037 |
| https://git.kernel.org/stable/c/a68184d5b420ea4fc7e6b7ceb52bbc66f90d3c50 |
| https://git.kernel.org/stable/c/6f4d93b78ade0a4c2cafd587f7b429ce95abb02e |
