| 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-2024-50251: netfilter: nft_payload: sanitize offset and length before calling skb_checksum() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: nft_payload: sanitize offset and length before calling skb_checksum() |
| |
| If access to offset + length is larger than the skbuff length, then |
| skb_checksum() triggers BUG_ON(). |
| |
| skb_checksum() internally subtracts the length parameter while iterating |
| over skbuff, BUG_ON(len) at the end of it checks that the expected |
| length to be included in the checksum calculation is fully consumed. |
| |
| The Linux kernel CVE team has assigned CVE-2024-50251 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 4.19.323 with commit a661ed364ae6ae88c2fafa9ddc27df1af2a73701 |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 5.4.285 with commit ac7df3fc80fc82bcc3b1e8f6ebc0d2c435d0c534 |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 5.10.229 with commit e3e608cbad376674d19a71ccd0d41804d9393f02 |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 5.15.171 with commit b1d2de8a669fa14c499a385e056944d5352b3b40 |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 6.1.116 with commit d3217323525f7596427124359e76ea0d8fcc9874 |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 6.6.60 with commit 0ab3be58b45b996764aba0187b46de19b3e58a72 |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 6.11.7 with commit c43e0ea848e7b9bef7a682cbc5608022d6d29d7b |
| Issue introduced in 4.5 with commit 7ec3f7b47b8d9ad7ba425726f2c58f9ddce040df and fixed in 6.12 with commit d5953d680f7e96208c29ce4139a0e38de87a57fe |
| |
| 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-2024-50251 |
| 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/netfilter/nft_payload.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/a661ed364ae6ae88c2fafa9ddc27df1af2a73701 |
| https://git.kernel.org/stable/c/ac7df3fc80fc82bcc3b1e8f6ebc0d2c435d0c534 |
| https://git.kernel.org/stable/c/e3e608cbad376674d19a71ccd0d41804d9393f02 |
| https://git.kernel.org/stable/c/b1d2de8a669fa14c499a385e056944d5352b3b40 |
| https://git.kernel.org/stable/c/d3217323525f7596427124359e76ea0d8fcc9874 |
| https://git.kernel.org/stable/c/0ab3be58b45b996764aba0187b46de19b3e58a72 |
| https://git.kernel.org/stable/c/c43e0ea848e7b9bef7a682cbc5608022d6d29d7b |
| https://git.kernel.org/stable/c/d5953d680f7e96208c29ce4139a0e38de87a57fe |
