{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31563", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.116Z", "datePublished": "2026-04-24T14:35:44.610Z", "dateUpdated": "2026-04-24T14:35:44.610Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-24T14:35:44.610Z"}, "descriptions": [{"lang": "en", "value": "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 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"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/cadence/macb_main.c"], "versions": [{"version": "aeeafeb29b1b270302a9a85a13f7d70a68a3b9e6", "lessThan": "92e7081f0c79d9073087e54bab745bb184192c2e", "status": "affected", "versionType": "git"}, {"version": "5430388a81113e62a2d48b5d7dc1e76231908ebf", "lessThan": "78c8b090a3d5c1689dc989861b0163180db2b3f8", "status": "affected", "versionType": "git"}, {"version": "7db8aa3fc4ed0a2928246747b2514b0741a8187e", "lessThan": "984350b37372f79f71d4f0a5264c640e40daf9ce", "status": "affected", "versionType": "git"}, {"version": "6bc8a5098bf4a365c4086a4a4130bfab10a58260", "lessThan": "f4bc91398b579730284328322365afa77a9d568f", "status": "affected", "versionType": "git"}, {"version": "6bc8a5098bf4a365c4086a4a4130bfab10a58260", "lessThan": "ca4d05afb4683d685bb2c6fccae4386c478f524a", "status": "affected", "versionType": "git"}, {"version": "6bc8a5098bf4a365c4086a4a4130bfab10a58260", "lessThan": "647b8a2fe474474704110db6bd07f7a139e621eb", "status": "affected", "versionType": "git"}, {"version": "a4cb0a15ab8e6d06c08229a2c7bdbe1f2454473f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/cadence/macb_main.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.168", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.131", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.80", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.11", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.151", "versionEndExcluding": "6.1.168"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.105", "versionEndExcluding": "6.6.131"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.46", "versionEndExcluding": "6.12.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.19.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/92e7081f0c79d9073087e54bab745bb184192c2e"}, {"url": "https://git.kernel.org/stable/c/78c8b090a3d5c1689dc989861b0163180db2b3f8"}, {"url": "https://git.kernel.org/stable/c/984350b37372f79f71d4f0a5264c640e40daf9ce"}, {"url": "https://git.kernel.org/stable/c/f4bc91398b579730284328322365afa77a9d568f"}, {"url": "https://git.kernel.org/stable/c/ca4d05afb4683d685bb2c6fccae4386c478f524a"}, {"url": "https://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb"}], "title": "net: macb: Use dev_consume_skb_any() to free TX SKBs", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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 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"}], "id": "CVE-2026-31563", "lastModified": "2026-04-24T17:51:40.810", "metrics": {}, "published": "2026-04-24T15:16:30.720", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/78c8b090a3d5c1689dc989861b0163180db2b3f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/92e7081f0c79d9073087e54bab745bb184192c2e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/984350b37372f79f71d4f0a5264c640e40daf9ce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ca4d05afb4683d685bb2c6fccae4386c478f524a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f4bc91398b579730284328322365afa77a9d568f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: net: macb: Use dev_consume_skb_any() to free TX SKBs", "id": "2461479", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461479"}, "csaw": false, "cwe": "CWE-821", "details": ["A flaw was found in the Linux kernel's macb Ethernet driver. The `napi_consume_skb()` function, which is used for freeing network packet buffers (SKBs), was incorrectly called in an interrupt-disabled context. This improper handling of network packet freeing can lead to a kernel warning and system instability, potentially causing a denial of service."], "name": "CVE-2026-31563", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31563\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31563\nhttps://lore.kernel.org/linux-cve-announce/2026042459-CVE-2026-31563-ae94@gregkh/T"]}

{}