In the Linux kernel, the following vulnerability has been resolved:
net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send
In emac_mac_tx_buf_send, it calls emac_tx_fill_tpd(..,skb,..). If some error happens in emac_tx_fill_tpd(), the skb will be freed via dev_kfree_skb(skb) in error branch of emac_tx_fill_tpd(). But the freed skb is still used via skb->len by netdev_sent_queue(,skb->len).
As i observed that emac_tx_fill_tpd() haven't modified the value of skb->len, thus my patch assigns skb->len to 'len' before the possible free and use 'len' instead of skb->len later.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-cross-headersUpgrade kernel-zfcpdump-coreUpgrade kernel-abi-stablelistsUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-modulesUpgrade bpftoolUpgrade kernel-modulesUpgrade kernel-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-rtUpgrade kernel-coreUpgrade kernel-toolsUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modulesUpgrade kernel-tools-libsUpgrade kernel-rt-debug-develUpgrade kernel-debug-modules-extraUpgrade kernel-headersUpgrade kernelUpgrade kernel-zfcpdumpUpgrade kernel-docUpgrade kernel-debug-develUpgrade kernel-develUpgrade kernel-rt-debugUpgrade kernel-rt-develUpgrade python3-perfUpgrade perfUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debug-coreUpgrade kernel-debugUpgrade kernel-rt-kvmUpgrade kernel-rt-modulesUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-core | Jun 6, 2024 | Feb 28, 2024 |
| Amazon Linux Ami 2 | — | Upgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-livepatch-4.14.238-182.421Upgrade python-perfUpgrade perfUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade bpftoolUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade kernel | May 28, 2024 | Feb 28, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Feb 28, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel | May 13, 2024 | Feb 28, 2024 |
| Huawei Euleros 2_0_sp8 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-develUpgrade kernel-headersUpgrade python3-perfUpgrade perfUpgrade kernel-toolsUpgrade python-perfUpgrade kernel | Jul 23, 2024 | Feb 28, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-toolsUpgrade kernel-tools-libs | Jul 17, 2024 | Feb 28, 2024 |
| Oracle_linux | — | Upgrade kernel | Jun 6, 2024 | Feb 28, 2024 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | May 30, 2024 | Feb 28, 2024 |
| Rocky_linux | — | Upgrade kernel-rt-coreUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-headersUpgrade kernel-cross-headersUpgrade kernel-tools-debuginfoUpgrade python3-perfUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debug-develUpgrade kernelUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-debug-debuginfoUpgrade kernel-modules-extraUpgrade kernel-develUpgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-kvmUpgrade python3-perf-debuginfoUpgrade perfUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modules-extraUpgrade bpftoolUpgrade kernel-rtUpgrade kernel-rt-develUpgrade kernel-rt-modulesUpgrade kernel-rt-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-rt-debugUpgrade kernel-tools-libs | Jun 17, 2024 | Feb 28, 2024 |
| Suse | — | Upgrade kernel-default-baseUpgrade kernel-defaultUpgrade kernel-docsUpgrade kernel-obs-buildUpgrade kernel-develUpgrade kernel-preempt-develUpgrade kernel-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-source-azureUpgrade kernel-sourceUpgrade kernel-64kb-develUpgrade kernel-default-extraUpgrade kernel-azure-develUpgrade kernel-syms-azureUpgrade kernel-zfcpdumpUpgrade kernel-azure-baseUpgrade kernel-default-manUpgrade kernel-preemptUpgrade kernel-devel-azureUpgrade kernel-default-develUpgrade kernel-macrosUpgrade kernel-symsUpgrade kernel-64kb | Aug 9, 2024 | Feb 28, 2024 |
| Ubuntu | — | Upgrade linux-oracle-5.4Upgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-bluefieldUpgrade linux-gcpUpgrade linuxUpgrade linux-aws-hweUpgrade linux-fipsUpgrade linux-raspi-5.4Upgrade linux-gkeopUpgrade linux-azure-5.4Upgrade linux-gcp-4.15Upgrade linux-aws-5.4Upgrade linux-azureUpgrade linux-hwe-5.4Upgrade linux-gcp-fipsUpgrade linux-awsUpgrade linux-oracleUpgrade linux-azure-4.15Upgrade linux-hweUpgrade linux-kvmUpgrade linux-raspiUpgrade linux-aws-fips | Nov 19, 2024 | Feb 28, 2024 |
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