{"id":"CVE-2026-31563","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: Use dev_consume_skb_any() to free TX SKBs\n\nThe napi_consume_skb() function is not intended to be called in an IRQ\ndisabled context","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: Use dev_consume_skb_any() to free TX SKBs\n\nThe napi_consume_skb() function is not intended to be called in an IRQ\ndisabled context. However, after commit 6bc…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.1.151, < 6.1.168","linux_kernel >= 6.6.105, < 6.6.131","linux_kernel >= 6.12.46, < 6.12.80","linux_kernel >= 6.16.6, < 6.17","linux_kernel >= 6.17.1, < 6.18.21","linux_kernel >= 6.19, < 6.19.11","linux_kernel = 6.17","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.11"],"published":"2026-04-24","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:11.283","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-31563","references":[{"url":"https://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/78c8b090a3d5c1689dc989861b0163180db2b3f8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/92e7081f0c79d9073087e54bab745bb184192c2e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/984350b37372f79f71d4f0a5264c640e40daf9ce","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ca4d05afb4683d685bb2c6fccae4386c478f524a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f4bc91398b579730284328322365afa77a9d568f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31563.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-31563"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2461479"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31563"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31563"},{"url":"https://lore.kernel.org/linux-cve-announce/2026042459-CVE-2026-31563-ae94@gregkh/T"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00564,"epssPercentile":0.46678,"ingestedAt":"2026-09-08T15:33:26.990Z","cwe":["CWE-821"],"slug":"CVE-2026-31563","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: Use dev_consume_skb_any() to free TX SKBs\n\nThe napi_consume_skb() function is not intended to be called in an IRQ\ndisabled context. However, after commit 6bc8a5098bf4 (\"net: macb: Fix\ntx_ptr_lock locking\"), the freeing of TX SKBs is performed with IRQs\ndisabled. To resolve the following call trace, use dev_consume_skb_any()\nfor freeing TX SKBs:\n   WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0x174/0x188, CPU#0: ksoftirqd/0/15\n   Modules linked in:\n   CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 7.0.0-rc4-next-20260319-yocto-standard-dirty #37 PREEMPT\n   Hardware name: ZynqMP ZCU102 Rev1.1 (DT)\n   pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n   pc : __local_bh_enable_ip+0x174/0x188\n   lr : local_bh_enable+0x24/0x38\n   sp : ffff800082b3bb10\n   x29: ffff800082b3bb10 x28: ffff0008031f3c00 x27: 000000000011ede0\n   x26: ffff000800a7ff00 x25: ffff800083937ce8 x24: 0000000000017a80\n   x23: ffff000803243a78 x22: 0000000000000040 x21: 0000000000000000\n   x20: ffff000800394c80 x19: 0000000000000200 x18: 0000000000000001\n   x17: 0000000000000001 x16: ffff000803240000 x15: 0000000000000000\n   x14: ffffffffffffffff x13: 0000000000000028 x12: ffff000800395650\n   x11: ffff8000821d1528 x10: ffff800081c2bc08 x9 : ffff800081c1e258\n   x8 : 0000000100000301 x7 : ffff8000810426ec x6 : 0000000000000000\n   x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000\n   x2 : 0000000000000008 x1 : 0000000000000200 x0 : ffff8000810428dc\n   Call trace:\n    __local_bh_enable_ip+0x174/0x188 (P)\n    local_bh_enable+0x24/0x38\n    skb_attempt_defer_free+0x190/0x1d8\n    napi_consume_skb+0x58/0x108\n    macb_tx_poll+0x1a4/0x558\n    __napi_poll+0x50/0x198\n    net_rx_action+0x1f4/0x3d8\n    handle_softirqs+0x16c/0x560\n    run_ksoftirqd+0x44/0x80\n    smpboot_thread_fn+0x1d8/0x338\n    kthread+0x120/0x150\n    ret_from_fork+0x10/0x20\n   irq event stamp: 29751\n   hardirqs last  enabled at (29750): [<ffff8000813be184>] _raw_spin_unlock_irqrestore+0x44/0x88\n   hardirqs last disabled at (29751): [<ffff8000813bdf60>] _raw_spin_lock_irqsave+0x38/0x98\n   softirqs last  enabled at (29150): [<ffff8000800f1aec>] handle_softirqs+0x504/0x560\n   softirqs last disabled at (29153): [<ffff8000800f2fec>] run_ksoftirqd+0x44/0x80\n\n## Affected\n\n- `linux_kernel >= 6.1.151, < 6.1.168`\n- `linux_kernel >= 6.6.105, < 6.6.131`\n- `linux_kernel >= 6.12.46, < 6.12.80`\n- `linux_kernel >= 6.16.6, < 6.17`\n- `linux_kernel >= 6.17.1, < 6.18.21`\n- `linux_kernel >= 6.19, < 6.19.11`\n- `linux_kernel = 6.17`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.11`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31563.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}