| 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-2024-36917: block: fix overflow in blk_ioctl_discard() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| block: fix overflow in blk_ioctl_discard() |
| |
| There is no check for overflow of 'start + len' in blk_ioctl_discard(). |
| Hung task occurs if submit an discard ioctl with the following param: |
| start = 0x80000000000ff000, len = 0x8000000000fff000; |
| Add the overflow validation now. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36917 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.28 with commit d30a2605be9d5132d95944916e8f578fcfe4f976 and fixed in 6.1.91 with commit 8a26198186e97ee5fc4b42fde82629cff8c75cd6 |
| Issue introduced in 2.6.28 with commit d30a2605be9d5132d95944916e8f578fcfe4f976 and fixed in 6.6.31 with commit e1d38cde2b7b0fbd1c48082e7a98c37d750af59b |
| Issue introduced in 2.6.28 with commit d30a2605be9d5132d95944916e8f578fcfe4f976 and fixed in 6.8.10 with commit 507d526a98c355e6f3fb2c47aacad44a69784bee |
| Issue introduced in 2.6.28 with commit d30a2605be9d5132d95944916e8f578fcfe4f976 and fixed in 6.9 with commit 22d24a544b0d49bbcbd61c8c0eaf77d3c9297155 |
| |
| 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-2024-36917 |
| 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: |
| block/ioctl.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/8a26198186e97ee5fc4b42fde82629cff8c75cd6 |
| https://git.kernel.org/stable/c/e1d38cde2b7b0fbd1c48082e7a98c37d750af59b |
| https://git.kernel.org/stable/c/507d526a98c355e6f3fb2c47aacad44a69784bee |
| https://git.kernel.org/stable/c/22d24a544b0d49bbcbd61c8c0eaf77d3c9297155 |
