| 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-2022-48794: net: ieee802154: at86rf230: Stop leaking skb's |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: ieee802154: at86rf230: Stop leaking skb's |
| |
| Upon error the ieee802154_xmit_complete() helper is not called. Only |
| ieee802154_wake_queue() is called manually. In the Tx case we then leak |
| the skb structure. |
| |
| Free the skb structure upon error before returning when appropriate. |
| |
| As the 'is_tx = 0' cannot be moved in the complete handler because of a |
| possible race between the delay in switching to STATE_RX_AACK_ON and a |
| new interrupt, we introduce an intermediate 'was_tx' boolean just for |
| this purpose. |
| |
| There is no Fixes tag applying here, many changes have been made on this |
| area and the issue kind of always existed. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48794 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.9.303 with commit d2a1eaf51b7d4412319adb6acef114ba472d1692 |
| Fixed in 4.14.268 with commit af649e5c95f56df64363bc46f6746b87819f9c0d |
| Fixed in 4.19.231 with commit 6312f6a53fd3ea38125dcaca5e3c9aa7d8a60cf7 |
| Fixed in 5.4.181 with commit 455ef08d6e5473526fa6763f75a93f7198206966 |
| Fixed in 5.10.102 with commit 0fd484644c68897c490a3307bfcc8bf767df5a43 |
| Fixed in 5.15.25 with commit 23b2a25382400168427ea278f3d8bf4ecfd333bf |
| Fixed in 5.16.11 with commit 1c72f04d52b7200bb83426a9bed378668271ea4a |
| Fixed in 5.17 with commit e5ce576d45bf72fd0e3dc37eff897bfcc488f6a9 |
| |
| 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-2022-48794 |
| 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/net/ieee802154/at86rf230.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/d2a1eaf51b7d4412319adb6acef114ba472d1692 |
| https://git.kernel.org/stable/c/af649e5c95f56df64363bc46f6746b87819f9c0d |
| https://git.kernel.org/stable/c/6312f6a53fd3ea38125dcaca5e3c9aa7d8a60cf7 |
| https://git.kernel.org/stable/c/455ef08d6e5473526fa6763f75a93f7198206966 |
| https://git.kernel.org/stable/c/0fd484644c68897c490a3307bfcc8bf767df5a43 |
| https://git.kernel.org/stable/c/23b2a25382400168427ea278f3d8bf4ecfd333bf |
| https://git.kernel.org/stable/c/1c72f04d52b7200bb83426a9bed378668271ea4a |
| https://git.kernel.org/stable/c/e5ce576d45bf72fd0e3dc37eff897bfcc488f6a9 |
