| 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-2024-36031: keys: Fix overwrite of key expiration on instantiation |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| keys: Fix overwrite of key expiration on instantiation |
| |
| The expiry time of a key is unconditionally overwritten during |
| instantiation, defaulting to turn it permanent. This causes a problem |
| for DNS resolution as the expiration set by user-space is overwritten to |
| TIME64_MAX, disabling further DNS updates. Fix this by restoring the |
| condition that key_set_expiry is only called when the pre-parser sets a |
| specific expiry. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36031 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10.206 with commit 97be1e865e70e5a0ad0a5b5f5dca5031ca0b53ac and fixed in 5.10.217 with commit ad2011ea787928b2accb5134f1e423b11fe80a8a |
| Issue introduced in 5.15.146 with commit 2552b32b0b349df160a509fe49f5f308cb922f2b and fixed in 5.15.159 with commit ed79b93f725cd0da39a265dc23d77add1527b9be |
| Issue introduced in 6.1.70 with commit 791d5409cdb974c31a1bc7a903ea729ddc7d83df and fixed in 6.1.91 with commit e4519a016650e952ad9eb27937f8c447d5a4e06d |
| Issue introduced in 6.6.9 with commit afc360e8a1256acb7579a6f5b6f2c30b85b39301 and fixed in 6.6.31 with commit 25777f3f4e1f371d16a594925f31e37ce07b6ec7 |
| Issue introduced in 6.7 with commit 39299bdd2546688d92ed9db4948f6219ca1b9542 and fixed in 6.8.10 with commit 939a08bcd4334bad4b201e60bd0ae1f278d71d41 |
| Issue introduced in 6.7 with commit 39299bdd2546688d92ed9db4948f6219ca1b9542 and fixed in 6.9.1 with commit cc219cb8afbc40ec100c0de941047bb29373126a |
| Issue introduced in 6.7 with commit 39299bdd2546688d92ed9db4948f6219ca1b9542 and fixed in 6.10 with commit 9da27fb65a14c18efd4473e2e82b76b53ba60252 |
| |
| 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-2024-36031 |
| 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/key.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/ad2011ea787928b2accb5134f1e423b11fe80a8a |
| https://git.kernel.org/stable/c/ed79b93f725cd0da39a265dc23d77add1527b9be |
| https://git.kernel.org/stable/c/e4519a016650e952ad9eb27937f8c447d5a4e06d |
| https://git.kernel.org/stable/c/25777f3f4e1f371d16a594925f31e37ce07b6ec7 |
| https://git.kernel.org/stable/c/939a08bcd4334bad4b201e60bd0ae1f278d71d41 |
| https://git.kernel.org/stable/c/cc219cb8afbc40ec100c0de941047bb29373126a |
| https://git.kernel.org/stable/c/9da27fb65a14c18efd4473e2e82b76b53ba60252 |
