| 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-2024-26763: dm-crypt: don't modify the data when using authenticated encryption |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dm-crypt: don't modify the data when using authenticated encryption |
| |
| It was said that authenticated encryption could produce invalid tag when |
| the data that is being encrypted is modified [1]. So, fix this problem by |
| copying the data into the clone bio first and then encrypt them inside the |
| clone bio. |
| |
| This may reduce performance, but it is needed to prevent the user from |
| corrupting the device by writing data with O_DIRECT and modifying them at |
| the same time. |
| |
| [1] https://lore.kernel.org/all/20240207004723.GA35324@sol.localdomain/T/ |
| |
| The Linux kernel CVE team has assigned CVE-2024-26763 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.308 with commit 43a202bd552976497474ae144942e32cc5f34d7e |
| Fixed in 5.4.270 with commit 0dccbb93538fe89a86c6de31d4b1c8c560848eaa |
| Fixed in 5.10.211 with commit 3c652f6fa1e1f9f02c3fbf359d260ad153ec5f90 |
| Fixed in 5.15.150 with commit 1a4371db68a31076afbe56ecce34fbbe6c80c529 |
| Fixed in 6.1.80 with commit e08c2a8d27e989f0f5b0888792643027d7e691e6 |
| Fixed in 6.6.19 with commit 64ba01a365980755732972523600a961c4266b75 |
| Fixed in 6.7.7 with commit d9e3763a505e50ba3bd22846f2a8db99429fb857 |
| Fixed in 6.8 with commit 50c70240097ce41fe6bce6478b80478281e4d0f7 |
| |
| 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-2024-26763 |
| 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/md/dm-crypt.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/43a202bd552976497474ae144942e32cc5f34d7e |
| https://git.kernel.org/stable/c/0dccbb93538fe89a86c6de31d4b1c8c560848eaa |
| https://git.kernel.org/stable/c/3c652f6fa1e1f9f02c3fbf359d260ad153ec5f90 |
| https://git.kernel.org/stable/c/1a4371db68a31076afbe56ecce34fbbe6c80c529 |
| https://git.kernel.org/stable/c/e08c2a8d27e989f0f5b0888792643027d7e691e6 |
| https://git.kernel.org/stable/c/64ba01a365980755732972523600a961c4266b75 |
| https://git.kernel.org/stable/c/d9e3763a505e50ba3bd22846f2a8db99429fb857 |
| https://git.kernel.org/stable/c/50c70240097ce41fe6bce6478b80478281e4d0f7 |
