| 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-2025-37823: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too |
| |
| Similarly to the previous patch, we need to safe guard hfsc_dequeue() |
| too. But for this one, we don't have a reliable reproducer. |
| |
| The Linux kernel CVE team has assigned CVE-2025-37823 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.4.293 with commit 68f256305ceb426d545a0dc31f83c2ab1d211a1e |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.10.237 with commit 2f46d14919c39528c6e540ebc43f90055993eedc |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.15.181 with commit da7936518996d290e2fcfcaf6cd7e15bfd87804a |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.1.136 with commit 11bccb054c1462fb069219f8e98e97a5a730758e |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.6.89 with commit 76c4c22c2437d3d3880efc0f62eca06ef078d290 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.12.26 with commit c6f035044104c6ff656f4565cd22938dc892528c |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.14.5 with commit c6936266f8bf98a53f28ef9a820e6a501e946d09 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.15 with commit 6ccbda44e2cc3d26fd22af54c650d6d5d801addf |
| |
| 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-2025-37823 |
| 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/sched/sch_hfsc.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/68f256305ceb426d545a0dc31f83c2ab1d211a1e |
| https://git.kernel.org/stable/c/2f46d14919c39528c6e540ebc43f90055993eedc |
| https://git.kernel.org/stable/c/da7936518996d290e2fcfcaf6cd7e15bfd87804a |
| https://git.kernel.org/stable/c/11bccb054c1462fb069219f8e98e97a5a730758e |
| https://git.kernel.org/stable/c/76c4c22c2437d3d3880efc0f62eca06ef078d290 |
| https://git.kernel.org/stable/c/c6f035044104c6ff656f4565cd22938dc892528c |
| https://git.kernel.org/stable/c/c6936266f8bf98a53f28ef9a820e6a501e946d09 |
| https://git.kernel.org/stable/c/6ccbda44e2cc3d26fd22af54c650d6d5d801addf |
