| 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-2024-26634: net: fix removing a namespace with conflicting altnames |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: fix removing a namespace with conflicting altnames |
| |
| Mark reports a BUG() when a net namespace is removed. |
| |
| kernel BUG at net/core/dev.c:11520! |
| |
| Physical interfaces moved outside of init_net get "refunded" |
| to init_net when that namespace disappears. The main interface |
| name may get overwritten in the process if it would have |
| conflicted. We need to also discard all conflicting altnames. |
| Recent fixes addressed ensuring that altnames get moved |
| with the main interface, which surfaced this problem. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26634 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1.60 with commit 673edcffa0960fc154085d639e10f80b6317d3bd and fixed in 6.1.76 with commit a2232f29bf52c24f827865b3c90829c44b6c695b |
| Issue introduced in 6.6 with commit 7663d522099ecc464512164e660bc771b2ff7b64 and fixed in 6.6.15 with commit e855dded4b70d1975ee7b9fed0c700391e3c8ea6 |
| Issue introduced in 6.6 with commit 7663d522099ecc464512164e660bc771b2ff7b64 and fixed in 6.7.3 with commit 8072699aa9e67d1727692cfb3c347263bb627fb9 |
| Issue introduced in 6.6 with commit 7663d522099ecc464512164e660bc771b2ff7b64 and fixed in 6.8 with commit d09486a04f5da0a812c26217213b89a3b1acf836 |
| Issue introduced in 6.5.9 with commit f7a69786fe5ec75d1cdd71b465e74a1adc68ef40 |
| |
| 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-2024-26634 |
| 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: |
| net/core/dev.c |
| net/core/dev.h |
| |
| |
| 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/a2232f29bf52c24f827865b3c90829c44b6c695b |
| https://git.kernel.org/stable/c/e855dded4b70d1975ee7b9fed0c700391e3c8ea6 |
| https://git.kernel.org/stable/c/8072699aa9e67d1727692cfb3c347263bb627fb9 |
| https://git.kernel.org/stable/c/d09486a04f5da0a812c26217213b89a3b1acf836 |
