| 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-2022-48805: net: usb: ax88179_178a: Fix out-of-bounds accesses in RX fixup |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: usb: ax88179_178a: Fix out-of-bounds accesses in RX fixup |
| |
| ax88179_rx_fixup() contains several out-of-bounds accesses that can be |
| triggered by a malicious (or defective) USB device, in particular: |
| |
| - The metadata array (hdr_off..hdr_off+2*pkt_cnt) can be out of bounds, |
| causing OOB reads and (on big-endian systems) OOB endianness flips. |
| - A packet can overlap the metadata array, causing a later OOB |
| endianness flip to corrupt data used by a cloned SKB that has already |
| been handed off into the network stack. |
| - A packet SKB can be constructed whose tail is far beyond its end, |
| causing out-of-bounds heap data to be considered part of the SKB's |
| data. |
| |
| I have tested that this can be used by a malicious USB device to send a |
| bogus ICMPv6 Echo Request and receive an ICMPv6 Echo Reply in response |
| that contains random kernel heap data. |
| It's probably also possible to get OOB writes from this on a |
| little-endian system somehow - maybe by triggering skb_cow() via IP |
| options processing -, but I haven't tested that. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48805 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 4.9.303 with commit 711b6bf3fb052f0a6b5b3205d50e30c0c2980382 |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 4.14.268 with commit 63f0cfb36c1f1964a59ce544156677601e2d8740 |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 4.19.231 with commit 1668781ed24da43498799aa4f65714a7de201930 |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 5.4.180 with commit a0fd5492ee769029a636f1fb521716b022b1423d |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 5.10.101 with commit 758290defe93a865a2880d10c5d5abd288b64b5d |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 5.15.24 with commit ffd0393adcdcefab7e131488e10dcfde5e02d6eb |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 5.16.10 with commit 9681823f96a811268265f35307072ad80713c274 |
| Issue introduced in 3.9 with commit e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 and fixed in 5.17 with commit 57bc3d3ae8c14df3ceb4e17d26ddf9eeab304581 |
| |
| 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-2022-48805 |
| 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/usb/ax88179_178a.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/711b6bf3fb052f0a6b5b3205d50e30c0c2980382 |
| https://git.kernel.org/stable/c/63f0cfb36c1f1964a59ce544156677601e2d8740 |
| https://git.kernel.org/stable/c/1668781ed24da43498799aa4f65714a7de201930 |
| https://git.kernel.org/stable/c/a0fd5492ee769029a636f1fb521716b022b1423d |
| https://git.kernel.org/stable/c/758290defe93a865a2880d10c5d5abd288b64b5d |
| https://git.kernel.org/stable/c/ffd0393adcdcefab7e131488e10dcfde5e02d6eb |
| https://git.kernel.org/stable/c/9681823f96a811268265f35307072ad80713c274 |
| https://git.kernel.org/stable/c/57bc3d3ae8c14df3ceb4e17d26ddf9eeab304581 |
