| 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-2024-47677: exfat: resolve memory leak from exfat_create_upcase_table() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| exfat: resolve memory leak from exfat_create_upcase_table() |
| |
| If exfat_load_upcase_table reaches end and returns -EINVAL, |
| allocated memory doesn't get freed and while |
| exfat_load_default_upcase_table allocates more memory, leading to a |
| memory leak. |
| |
| Here's link to syzkaller crash report illustrating this issue: |
| https://syzkaller.appspot.com/text?tag=CrashReport&x=1406c201980000 |
| |
| The Linux kernel CVE team has assigned CVE-2024-47677 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit a13d1a4de3b0fe3c41d818697d691c886c5585fa and fixed in 6.10.13 with commit f9835aec49670c46ebe2973032caaa1043b3d4da |
| Issue introduced in 6.8 with commit a13d1a4de3b0fe3c41d818697d691c886c5585fa and fixed in 6.11.2 with commit 331ed2c739ce656a67865f6b3ee0a478349d78cb |
| Issue introduced in 6.8 with commit a13d1a4de3b0fe3c41d818697d691c886c5585fa and fixed in 6.12 with commit c290fe508eee36df1640c3cb35dc8f89e073c8a8 |
| |
| 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-2024-47677 |
| 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: |
| fs/exfat/nls.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/f9835aec49670c46ebe2973032caaa1043b3d4da |
| https://git.kernel.org/stable/c/331ed2c739ce656a67865f6b3ee0a478349d78cb |
| https://git.kernel.org/stable/c/c290fe508eee36df1640c3cb35dc8f89e073c8a8 |
