| 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-2022-49084: qede: confirm skb is allocated before using |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| qede: confirm skb is allocated before using |
| |
| qede_build_skb() assumes build_skb() always works and goes straight |
| to skb_reserve(). However, build_skb() can fail under memory pressure. |
| This results in a kernel panic because the skb to reserve is NULL. |
| |
| Add a check in case build_skb() failed to allocate and return NULL. |
| |
| The NULL return is handled correctly in callers to qede_build_skb(). |
| |
| The Linux kernel CVE team has assigned CVE-2022-49084 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 4.19.238 with commit 9648adb1b3ece55c657d3a4f52bfee663b710dfe |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 5.4.189 with commit 034a92c6a81048128fc7b18d278d52438a13902a |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 5.10.111 with commit 8928239e5e2e460d95b8a0b89f61671625e7ece0 |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 5.15.34 with commit c9bdce2359b5f4986eb38d1e81865b3586cc20d2 |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 5.16.20 with commit b2d6b3db9d1cf80908964036dbe1c52a86b1afb1 |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 5.17.3 with commit e1fd0c42acfa22bb34d2ab6a111484f466ab8093 |
| Issue introduced in 4.18 with commit 8a8633978b842c88fbcfe00d4e5dde96048f630e and fixed in 5.18 with commit 4e910dbe36508654a896d5735b318c0b88172570 |
| |
| 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-2022-49084 |
| 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/ethernet/qlogic/qede/qede_fp.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/9648adb1b3ece55c657d3a4f52bfee663b710dfe |
| https://git.kernel.org/stable/c/034a92c6a81048128fc7b18d278d52438a13902a |
| https://git.kernel.org/stable/c/8928239e5e2e460d95b8a0b89f61671625e7ece0 |
| https://git.kernel.org/stable/c/c9bdce2359b5f4986eb38d1e81865b3586cc20d2 |
| https://git.kernel.org/stable/c/b2d6b3db9d1cf80908964036dbe1c52a86b1afb1 |
| https://git.kernel.org/stable/c/e1fd0c42acfa22bb34d2ab6a111484f466ab8093 |
| https://git.kernel.org/stable/c/4e910dbe36508654a896d5735b318c0b88172570 |
