| From bippy-7c5fe7eed585 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-2025-22016: dpll: fix xa_alloc_cyclic() error handling |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dpll: fix xa_alloc_cyclic() error handling |
| |
| In case of returning 1 from xa_alloc_cyclic() (wrapping) ERR_PTR(1) will |
| be returned, which will cause IS_ERR() to be false. Which can lead to |
| dereference not allocated pointer (pin). |
| |
| Fix it by checking if err is lower than zero. |
| |
| This wasn't found in real usecase, only noticed. Credit to Pierre. |
| |
| The Linux kernel CVE team has assigned CVE-2025-22016 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit 97f265ef7f5b526b33d6030b2a1fc69a2259bf4a and fixed in 6.12.21 with commit cb2f8a5c1fd9e7a1fefa23afe20570e16da1ada4 |
| Issue introduced in 6.8 with commit 97f265ef7f5b526b33d6030b2a1fc69a2259bf4a and fixed in 6.13.9 with commit 4d350043be684762e581d9bdd32d543621d01a9c |
| Issue introduced in 6.8 with commit 97f265ef7f5b526b33d6030b2a1fc69a2259bf4a and fixed in 6.14 with commit 3614bf90130d60f191a5fe218d04f6251c678e13 |
| |
| 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-2025-22016 |
| 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/dpll/dpll_core.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/cb2f8a5c1fd9e7a1fefa23afe20570e16da1ada4 |
| https://git.kernel.org/stable/c/4d350043be684762e581d9bdd32d543621d01a9c |
| https://git.kernel.org/stable/c/3614bf90130d60f191a5fe218d04f6251c678e13 |
