| 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-2021-47009: KEYS: trusted: Fix memory leak on object td |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| KEYS: trusted: Fix memory leak on object td |
| |
| Two error return paths are neglecting to free allocated object td, |
| causing a memory leak. Fix this by returning via the error return |
| path that securely kfree's td. |
| |
| Fixes clang scan-build warning: |
| security/keys/trusted-keys/trusted_tpm1.c:496:10: warning: Potential |
| memory leak [unix.Malloc] |
| |
| The Linux kernel CVE team has assigned CVE-2021-47009 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10.20 with commit 9d83cc1a1e7f494aedee2aa108e801d11525fccf and fixed in 5.10.38 with commit 31c9a4b24d86cbb36ff0d7a085725a3b4f0138c8 |
| Issue introduced in 5.11.3 with commit 8cfc8d62942105e5df4a20a15b24da077a6b24ef and fixed in 5.11.22 with commit 1c4031014106aff48e1e686e40101c31eab5d44c |
| Issue introduced in 5.12 with commit 5df16caada3fba3b21cb09b85cdedf99507f4ec1 and fixed in 5.12.5 with commit 3e24fbd37e72e8a67b74991970fecc82d14f57af |
| Issue introduced in 5.12 with commit 5df16caada3fba3b21cb09b85cdedf99507f4ec1 and fixed in 5.13 with commit 83a775d5f9bfda95b1c295f95a3a041a40c7f321 |
| |
| 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-2021-47009 |
| 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: |
| security/keys/trusted-keys/trusted_tpm1.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/31c9a4b24d86cbb36ff0d7a085725a3b4f0138c8 |
| https://git.kernel.org/stable/c/1c4031014106aff48e1e686e40101c31eab5d44c |
| https://git.kernel.org/stable/c/3e24fbd37e72e8a67b74991970fecc82d14f57af |
| https://git.kernel.org/stable/c/83a775d5f9bfda95b1c295f95a3a041a40c7f321 |
