| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49809: net/x25: Fix skb leak in x25_lapb_receive_frame() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/x25: Fix skb leak in x25_lapb_receive_frame() |
| |
| x25_lapb_receive_frame() using skb_copy() to get a private copy of |
| skb, the new skb should be freed in the undersized/fragmented skb |
| error handling path. Otherwise there is a memory leak. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49809 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 4.9.334 with commit fda0ba7c84b46d10947c687320804b9de149a921 |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 4.14.300 with commit dfcfbe4f2e4b2c81cff4e79b48502d97fda73118 |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 4.19.267 with commit 0ef17d966445358a55c5f4ccf2c73cca3e39192b |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 5.4.225 with commit e109b41870db995cae25dfaf0cc3922f9028b1a1 |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 5.10.156 with commit 9f00da9c866d506998bf0a3f699ec900730472da |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 5.15.80 with commit c8baf1fc248b2e88642f094fea9509a9bf98c5bb |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 6.0.10 with commit 2d675be16a461310d738d93f9f1a00da62055c5a |
| Issue introduced in 3.1 with commit cb101ed2c3c7c0224d16953fe77bfb9d6c2cb9df and fixed in 6.1 with commit 2929cceb2fcf0ded7182562e4888afafece82cce |
| Issue introduced in 3.0.72 with commit 7f3ea0c12493c9ff38a13a89bcf08846b50c1f1c |
| |
| 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-2022-49809 |
| 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/x25/x25_dev.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/fda0ba7c84b46d10947c687320804b9de149a921 |
| https://git.kernel.org/stable/c/dfcfbe4f2e4b2c81cff4e79b48502d97fda73118 |
| https://git.kernel.org/stable/c/0ef17d966445358a55c5f4ccf2c73cca3e39192b |
| https://git.kernel.org/stable/c/e109b41870db995cae25dfaf0cc3922f9028b1a1 |
| https://git.kernel.org/stable/c/9f00da9c866d506998bf0a3f699ec900730472da |
| https://git.kernel.org/stable/c/c8baf1fc248b2e88642f094fea9509a9bf98c5bb |
| https://git.kernel.org/stable/c/2d675be16a461310d738d93f9f1a00da62055c5a |
| https://git.kernel.org/stable/c/2929cceb2fcf0ded7182562e4888afafece82cce |
