| 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-2024-35847: irqchip/gic-v3-its: Prevent double free on error |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| irqchip/gic-v3-its: Prevent double free on error |
| |
| The error handling path in its_vpe_irq_domain_alloc() causes a double free |
| when its_vpe_init() fails after successfully allocating at least one |
| interrupt. This happens because its_vpe_irq_domain_free() frees the |
| interrupts along with the area bitmap and the vprop_page and |
| its_vpe_irq_domain_alloc() subsequently frees the area bitmap and the |
| vprop_page again. |
| |
| Fix this by unconditionally invoking its_vpe_irq_domain_free() which |
| handles all cases correctly and by removing the bitmap/vprop_page freeing |
| from its_vpe_irq_domain_alloc(). |
| |
| [ tglx: Massaged change log ] |
| |
| The Linux kernel CVE team has assigned CVE-2024-35847 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 4.19.313 with commit f5417ff561b8ac9a7e53c747b8627a7ab58378ae |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 5.4.275 with commit b72d2b1448b682844f995e660b77f2a1fabc1662 |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 5.10.216 with commit aa44d21574751a7d6bca892eb8e0e9ac68372e52 |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 5.15.158 with commit 5dbdbe1133911ca7d8466bb86885adec32ad9438 |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 6.1.90 with commit dd681710ab77c8beafe2e263064cb1bd0e2d6ca9 |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 6.6.30 with commit 03170e657f62c26834172742492a8cb8077ef792 |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 6.8.9 with commit 5b012f77abde89bf0be8a0547636184fea618137 |
| Issue introduced in 4.14 with commit 7d75bbb4bc1ad90386776459d37e4ddfe605671e and fixed in 6.9 with commit c26591afd33adce296c022e3480dea4282b7ef91 |
| |
| 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-2024-35847 |
| 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/irqchip/irq-gic-v3-its.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/f5417ff561b8ac9a7e53c747b8627a7ab58378ae |
| https://git.kernel.org/stable/c/b72d2b1448b682844f995e660b77f2a1fabc1662 |
| https://git.kernel.org/stable/c/aa44d21574751a7d6bca892eb8e0e9ac68372e52 |
| https://git.kernel.org/stable/c/5dbdbe1133911ca7d8466bb86885adec32ad9438 |
| https://git.kernel.org/stable/c/dd681710ab77c8beafe2e263064cb1bd0e2d6ca9 |
| https://git.kernel.org/stable/c/03170e657f62c26834172742492a8cb8077ef792 |
| https://git.kernel.org/stable/c/5b012f77abde89bf0be8a0547636184fea618137 |
| https://git.kernel.org/stable/c/c26591afd33adce296c022e3480dea4282b7ef91 |
