| 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-2023-53142: ice: copy last block omitted in ice_get_module_eeprom() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ice: copy last block omitted in ice_get_module_eeprom() |
| |
| ice_get_module_eeprom() is broken since commit e9c9692c8a81 ("ice: |
| Reimplement module reads used by ethtool") In this refactor, |
| ice_get_module_eeprom() reads the eeprom in blocks of size 8. |
| But the condition that should protect the buffer overflow |
| ignores the last block. The last block always contains zeros. |
| |
| Bug uncovered by ethtool upstream commit 9538f384b535 |
| ("netlink: eeprom: Defer page requests to individual parsers") |
| After this commit, ethtool reads a block with length = 1; |
| to read the SFF-8024 identifier value. |
| |
| unpatched driver: |
| $ ethtool -m enp65s0f0np0 offset 0x90 length 8 |
| Offset Values |
| ------ ------ |
| 0x0090: 00 00 00 00 00 00 00 00 |
| $ ethtool -m enp65s0f0np0 offset 0x90 length 12 |
| Offset Values |
| ------ ------ |
| 0x0090: 00 00 01 a0 4d 65 6c 6c 00 00 00 00 |
| $ |
| |
| $ ethtool -m enp65s0f0np0 |
| Offset Values |
| ------ ------ |
| 0x0000: 11 06 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| 0x0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| 0x0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| 0x0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| 0x0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| 0x0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 01 08 00 |
| 0x0070: 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| |
| patched driver: |
| $ ethtool -m enp65s0f0np0 offset 0x90 length 8 |
| Offset Values |
| ------ ------ |
| 0x0090: 00 00 01 a0 4d 65 6c 6c |
| $ ethtool -m enp65s0f0np0 offset 0x90 length 12 |
| Offset Values |
| ------ ------ |
| 0x0090: 00 00 01 a0 4d 65 6c 6c 61 6e 6f 78 |
| $ ethtool -m enp65s0f0np0 |
| Identifier : 0x11 (QSFP28) |
| Extended identifier : 0x00 |
| Extended identifier description : 1.5W max. Power consumption |
| Extended identifier description : No CDR in TX, No CDR in RX |
| Extended identifier description : High Power Class (> 3.5 W) not enabled |
| Connector : 0x23 (No separable connector) |
| Transceiver codes : 0x88 0x00 0x00 0x00 0x00 0x00 0x00 0x00 |
| Transceiver type : 40G Ethernet: 40G Base-CR4 |
| Transceiver type : 25G Ethernet: 25G Base-CR CA-N |
| Encoding : 0x05 (64B/66B) |
| BR, Nominal : 25500Mbps |
| Rate identifier : 0x00 |
| Length (SMF,km) : 0km |
| Length (OM3 50um) : 0m |
| Length (OM2 50um) : 0m |
| Length (OM1 62.5um) : 0m |
| Length (Copper or Active cable) : 1m |
| Transmitter technology : 0xa0 (Copper cable unequalized) |
| Attenuation at 2.5GHz : 4db |
| Attenuation at 5.0GHz : 5db |
| Attenuation at 7.0GHz : 7db |
| Attenuation at 12.9GHz : 10db |
| ........ |
| .... |
| |
| The Linux kernel CVE team has assigned CVE-2023-53142 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.13 with commit e9c9692c8a81aacf0854f68ab54dc182f8be38e8 and fixed in 5.15.103 with commit c813f7a3161481483ae2077651b21bc217c419e0 |
| Issue introduced in 5.13 with commit e9c9692c8a81aacf0854f68ab54dc182f8be38e8 and fixed in 6.1.20 with commit 90b40ab29298db3a4879c1d3c4e685184386bce6 |
| Issue introduced in 5.13 with commit e9c9692c8a81aacf0854f68ab54dc182f8be38e8 and fixed in 6.2.7 with commit 8cfbdda65588e75bfbd93e5ee847efcb4796ad09 |
| Issue introduced in 5.13 with commit e9c9692c8a81aacf0854f68ab54dc182f8be38e8 and fixed in 6.3 with commit 84cba1840e68430325ac133a11be06bfb2f7acd8 |
| |
| 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-2023-53142 |
| 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/intel/ice/ice_ethtool.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/c813f7a3161481483ae2077651b21bc217c419e0 |
| https://git.kernel.org/stable/c/90b40ab29298db3a4879c1d3c4e685184386bce6 |
| https://git.kernel.org/stable/c/8cfbdda65588e75bfbd93e5ee847efcb4796ad09 |
| https://git.kernel.org/stable/c/84cba1840e68430325ac133a11be06bfb2f7acd8 |
