| 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-2024-49851: tpm: Clean up TPM space after command failure |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tpm: Clean up TPM space after command failure |
| |
| tpm_dev_transmit prepares the TPM space before attempting command |
| transmission. However if the command fails no rollback of this |
| preparation is done. This can result in transient handles being leaked |
| if the device is subsequently closed with no further commands performed. |
| |
| Fix this by flushing the space in the event of command transmission |
| failure. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49851 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 5.4.285 with commit 87e8134c18977b566f4ec248c8a147244da69402 |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 5.10.227 with commit 2c9b228938e9266a1065a3f4fe5c99b7235dc439 |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 5.15.168 with commit ebc4e1f4492d114f9693950621b3ea42b2f82bec |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 6.1.113 with commit c84ceb546f30432fccea4891163f7050f5bee5dd |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 6.6.54 with commit 82478cb8a23bd4f97935bbe60d64528c6d9918b4 |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 6.10.13 with commit adf4ce162561222338cf2c9a2caa294527f7f721 |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 6.11.2 with commit 3f9f72d843c92fb6f4ff7460d774413cde7f254c |
| Issue introduced in 4.12 with commit 745b361e989af21ad40811c2586b60229f870a68 and fixed in 6.12 with commit e3aaebcbb7c6b403416f442d1de70d437ce313a7 |
| |
| 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-2024-49851 |
| 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/char/tpm/tpm-dev-common.c |
| drivers/char/tpm/tpm2-space.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/87e8134c18977b566f4ec248c8a147244da69402 |
| https://git.kernel.org/stable/c/2c9b228938e9266a1065a3f4fe5c99b7235dc439 |
| https://git.kernel.org/stable/c/ebc4e1f4492d114f9693950621b3ea42b2f82bec |
| https://git.kernel.org/stable/c/c84ceb546f30432fccea4891163f7050f5bee5dd |
| https://git.kernel.org/stable/c/82478cb8a23bd4f97935bbe60d64528c6d9918b4 |
| https://git.kernel.org/stable/c/adf4ce162561222338cf2c9a2caa294527f7f721 |
| https://git.kernel.org/stable/c/3f9f72d843c92fb6f4ff7460d774413cde7f254c |
| https://git.kernel.org/stable/c/e3aaebcbb7c6b403416f442d1de70d437ce313a7 |
