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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-debug-develUpgrade kernel-rt-coreUpgrade kernel-rt-modulesUpgrade kernel-rt-kvmUpgrade python3-perfUpgrade kernel-rt-debugUpgrade kernel-rt-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debugUpgrade perfUpgrade kernel-docUpgrade kernel-develUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-rtUpgrade kernel-zfcpdump-develUpgrade kernel-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debug-develUpgrade kernel-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-modulesUpgrade kernel-zfcpdumpUpgrade kernel-coreUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-rt-debug-kvmUpgrade kernel-headersUpgrade kernelUpgrade kernel-rt-debug-coreUpgrade kernel-cross-headersUpgrade kernel-abi-stablelistsUpgrade kernel-rt-modules-extra | Jun 6, 2024 | Feb 28, 2024 |
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade bpftoolUpgrade kernel-headersUpgrade python-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-debuginfoUpgrade kernelUpgrade python-perfUpgrade perfUpgrade kernel-develUpgrade kernel-livepatch-4.14.238-182.421Upgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64 | May 28, 2024 | Feb 28, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Feb 28, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel | May 13, 2024 | Feb 28, 2024 |
| Huawei Euleros 2_0_sp8 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-toolsUpgrade python-perfUpgrade perfUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-develUpgrade kernel-headers | Jul 23, 2024 | Feb 28, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-tools | Jul 17, 2024 | Feb 28, 2024 |
| Oracle_linux | — | Upgrade kernel | Jun 6, 2024 | Feb 28, 2024 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | May 30, 2024 | Feb 28, 2024 |
| Rocky_linux | — | Upgrade perfUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-rtUpgrade kernel-rt-kvmUpgrade kernel-toolsUpgrade kernel-rt-debug-debuginfoUpgrade kernel-tools-libs-develUpgrade kernel-rt-modulesUpgrade kernel-rt-debuginfoUpgrade bpftoolUpgrade kernel-debug-modulesUpgrade kernel-rt-develUpgrade kernel-tools-libsUpgrade kernel-rt-debugUpgrade python3-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-cross-headersUpgrade kernel-debugUpgrade kernel-headersUpgrade kernel-rt-debug-kvmUpgrade python3-perfUpgrade kernel-modulesUpgrade kernel-develUpgrade kernel-debug-coreUpgrade kernel-modules-extraUpgrade kernel-debug-debuginfoUpgrade kernelUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-develUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-coreUpgrade kernel-core | Jun 17, 2024 | Feb 28, 2024 |
| Suse | — | Upgrade kernel-default-baseUpgrade kernel-develUpgrade kernel-docsUpgrade kernel-defaultUpgrade reiserfs-kmp-defaultUpgrade kernel-azureUpgrade kernel-preempt-develUpgrade kernel-obs-buildUpgrade kernel-preemptUpgrade kernel-sourceUpgrade kernel-source-azureUpgrade kernel-default-manUpgrade kernel-64kb-develUpgrade kernel-azure-baseUpgrade kernel-default-develUpgrade kernel-macrosUpgrade kernel-default-extraUpgrade kernel-syms-azureUpgrade kernel-azure-develUpgrade kernel-symsUpgrade kernel-zfcpdumpUpgrade kernel-64kbUpgrade kernel-devel-azure | Aug 9, 2024 | Feb 28, 2024 |
| Ubuntu | — | Upgrade linux-bluefieldUpgrade linux-gcp-5.4Upgrade linux-raspi-5.4Upgrade linux-azure-fipsUpgrade linux-gkeopUpgrade linux-fipsUpgrade linux-oracle-5.4Upgrade linuxUpgrade linux-gcpUpgrade linux-aws-hweUpgrade linux-azureUpgrade linux-azure-4.15Upgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-kvmUpgrade linux-azure-5.4Upgrade linux-gcp-4.15Upgrade linux-raspiUpgrade linux-hweUpgrade linux-awsUpgrade linux-oracleUpgrade linux-aws-5.4Upgrade linux-gcp-fips | Nov 19, 2024 | Feb 28, 2024 |
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