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In the Linux kernel, the following vulnerability has been resolved:
net: mana: Fix Rx DMA datasize and skb_over_panic
mana_get_rxbuf_cfg() aligns the RX buffer's DMA datasize to be multiple of 64. So a packet slightly bigger than mtu+14, say 1536, can be received and cause skb_over_panic.
Sample dmesg: [ 5325.237162] skbuff: skb_over_panic: text:ffffffffc043277a len:1536 put:1536 head:ff1100018b517000 data:ff1100018b517100 tail:0x700 end:0x6ea dev:<NULL> [ 5325.243689] ------------[ cut here ]------------ [ 5325.245748] kernel BUG at net/core/skbuff.c:192! [ 5325.247838] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 5325.258374] RIP: 0010:skb_panic+0x4f/0x60 [ 5325.302941] Call Trace: [ 5325.304389] <IRQ> [ 5325.315794] ? skb_panic+0x4f/0x60 [ 5325.317457] ? asm_exc_invalid_op+0x1f/0x30 [ 5325.319490] ? skb_panic+0x4f/0x60 [ 5325.321161] skb_put+0x4e/0x50 [ 5325.322670] mana_poll+0x6fa/0xb50 [mana] [ 5325.324578] __napi_poll+0x33/0x1e0 [ 5325.326328] net_rx_action+0x12e/0x280
As discussed internally, this alignment is not necessary. To fix this bug, remove it from the code. So oversized packets will be marked as CQE_RX_TRUNCATED by NIC, and dropped.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 19, 2024 |
| Suse | — | Upgrade kernel-rt-extraUpgrade dtb-alteraUpgrade kernel-syms-azureUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-develUpgrade kernel-debug-vdsoUpgrade dtb-exynosUpgrade kernel-rt_debug-vdsoUpgrade kselftests-kmp-64kbUpgrade kernel-rt-optionalUpgrade kernel-defaultUpgrade kernel-default-extraUpgrade kernel-default-vdsoUpgrade kernel-rt-livepatchUpgrade kernel-azure-vdsoUpgrade kselftests-kmp-azureUpgrade dlm-kmp-64kbUpgrade dlm-kmp-rtUpgrade kernel-azureUpgrade kselftests-kmp-defaultUpgrade cluster-md-kmp-defaultUpgrade kernel-source-rtUpgrade cluster-md-kmp-64kbUpgrade kernel-debug-livepatch-develUpgrade kernel-kvmsmallUpgrade dtb-nvidiaUpgrade kernel-macrosUpgrade kernel-rt-vdsoUpgrade kernel-rt_debug-develUpgrade kernel-syms-rtUpgrade kernel-rt-livepatch-develUpgrade dtb-sprdUpgrade kernel-azure-develUpgrade kernel-default-base-rebuildUpgrade dtb-rockchipUpgrade kernel-azure-livepatch-develUpgrade dtb-amlogicUpgrade kernel-devel-azureUpgrade kernel-source-vanillaUpgrade dtb-qcomUpgrade reiserfs-kmp-azureUpgrade kernel-sourceUpgrade dtb-armUpgrade kernel-obs-buildUpgrade kernel-rtUpgrade kernel-docsUpgrade cluster-md-kmp-azureUpgrade ocfs2-kmp-rtUpgrade kernel-rt_debugUpgrade dtb-renesasUpgrade kernel-64kb-develUpgrade gfs2-kmp-defaultUpgrade kernel-devel-rtUpgrade kernel-default-optionalUpgrade gfs2-kmp-rtUpgrade dtb-amdUpgrade gfs2-kmp-64kbUpgrade dtb-appleUpgrade kernel-debug-develUpgrade kernel-source-azureUpgrade kernel-develUpgrade kernel-default-livepatchUpgrade reiserfs-kmp-defaultUpgrade dtb-apmUpgrade dtb-hisiliconUpgrade dtb-marvellUpgrade dtb-amazonUpgrade ocfs2-kmp-64kbUpgrade dtb-lgUpgrade ocfs2-kmp-defaultUpgrade kernel-default-baseUpgrade kernel-docs-htmlUpgrade dlm-kmp-defaultUpgrade reiserfs-kmp-rtUpgrade kernel-debugUpgrade kernel-64kb-optionalUpgrade kernel-64kbUpgrade dtb-socionextUpgrade dtb-freescaleUpgrade kernel-default-livepatch-develUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-azure-optionalUpgrade kernel-obs-qaUpgrade dtb-allwinnerUpgrade kselftests-kmp-rtUpgrade kernel-kvmsmall-develUpgrade kernel-64kb-extraUpgrade gfs2-kmp-azureUpgrade dtb-broadcomUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-caviumUpgrade kernel-symsUpgrade reiserfs-kmp-64kbUpgrade ocfs2-kmp-azureUpgrade kernel-zfcpdumpUpgrade kernel-default-develUpgrade kernel-azure-extraUpgrade kernel-64kb-livepatch-develUpgrade dtb-xilinxUpgrade dtb-mediatekUpgrade dlm-kmp-azureUpgrade cluster-md-kmp-rt | Jun 13, 2024 | May 19, 2024 |
| Ubuntu | — | Upgrade linux-image-6.5.0-1023-azureUpgrade linux-image-oem-24.04aUpgrade linux-image-5.15.0-1068-azure-fdeUpgrade linux-image-6.8.0-1007-raspiUpgrade linux-image-6.8.0-1009-nvidiaUpgrade linux-image-awsUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1009-nvidia-64kUpgrade linux-image-6.8.0-1009-azure-fdeUpgrade linux-image-6.8.0-1007-intelUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1010-azure-fdeUpgrade linux-image-oracleUpgrade linux-image-azure-cvmUpgrade linux-image-6.8.0-38-lowlatencyUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1010-azureUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1008-oracle-64kUpgrade linux-image-oem-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-kvmUpgrade linux-image-6.8.0-1006-gkeUpgrade linux-image-6.8.0-38-lowlatency-64kUpgrade linux-image-azureUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-6.8.0-1008-oracleUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1009-azureUpgrade linux-image-6.8.0-1008-oemUpgrade linux-image-azure-fdeUpgrade linux-image-raspiUpgrade linux-image-6.8.0-1011-awsUpgrade linux-image-genericUpgrade linux-image-nvidiaUpgrade linux-image-ibm-classicUpgrade linux-image-5.15.0-1068-azureUpgrade linux-image-ibmUpgrade linux-image-generic-lpaeUpgrade linux-image-6.5.0-1023-azure-fdeUpgrade linux-image-6.8.0-1008-ibmUpgrade linux-image-oracle-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-intelUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-38-genericUpgrade linux-image-6.8.0-1010-gcpUpgrade linux-image-azure-lts-22.04Upgrade linux-image-6.8.0-38-generic-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-64k | Jul 9, 2024 | May 19, 2024 |
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