| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-37909: net: lan743x: Fix memleak issue when GSO enabled |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: lan743x: Fix memleak issue when GSO enabled |
| |
| Always map the `skb` to the LS descriptor. Previously skb was |
| mapped to EXT descriptor when the number of fragments is zero with |
| GSO enabled. Mapping the skb to EXT descriptor prevents it from |
| being freed, leading to a memory leak |
| |
| The Linux kernel CVE team has assigned CVE-2025-37909 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 5.4.294 with commit 093855ce90177488eac772de4eefbb909033ce5f |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 5.10.238 with commit 6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9 |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 5.15.182 with commit df993daa4c968b4b23078eacc248f6502ede8664 |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 6.1.138 with commit a0e0efbabbbe6a1859bc31bf65237ce91e124b9b |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 6.6.90 with commit dae1ce27ceaea7e1522025b15252e3cc52802622 |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 6.12.28 with commit 189b05f189cac9fd233ef04d31cb5078c4d09c39 |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 6.14.6 with commit f42c18e2f14c1b1fdd2a5250069a84bc854c398c |
| Issue introduced in 4.17 with commit 23f0703c125be490f70501b6b24ed5645775c56a and fixed in 6.15 with commit 2d52e2e38b85c8b7bc00dca55c2499f46f8c8198 |
| |
| 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-2025-37909 |
| 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/microchip/lan743x_main.c |
| drivers/net/ethernet/microchip/lan743x_main.h |
| |
| |
| 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/093855ce90177488eac772de4eefbb909033ce5f |
| https://git.kernel.org/stable/c/6c65ee5ad632eb8dcd3a91cf5dc99b22535f44d9 |
| https://git.kernel.org/stable/c/df993daa4c968b4b23078eacc248f6502ede8664 |
| https://git.kernel.org/stable/c/a0e0efbabbbe6a1859bc31bf65237ce91e124b9b |
| https://git.kernel.org/stable/c/dae1ce27ceaea7e1522025b15252e3cc52802622 |
| https://git.kernel.org/stable/c/189b05f189cac9fd233ef04d31cb5078c4d09c39 |
| https://git.kernel.org/stable/c/f42c18e2f14c1b1fdd2a5250069a84bc854c398c |
| https://git.kernel.org/stable/c/2d52e2e38b85c8b7bc00dca55c2499f46f8c8198 |
