{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50476", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-04T15:13:33.467Z", "datePublished": "2025-10-04T15:16:36.895Z", "dateUpdated": "2026-05-11T19:20:13.817Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:20:13.817Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntb_netdev: Use dev_kfree_skb_any() in interrupt context\n\nTX/RX callback handlers (ntb_netdev_tx_handler(),\nntb_netdev_rx_handler()) can be called in interrupt\ncontext via the DMA framework when the respective\nDMA operations have completed. As such, any calls\nby these routines to free skb's, should use the\ninterrupt context safe dev_kfree_skb_any() function.\n\nPreviously, these callback handlers would call the\ninterrupt unsafe version of dev_kfree_skb(). This has\nnot presented an issue on Intel IOAT DMA engines as\nthat driver utilizes tasklets rather than a hard\ninterrupt handler, like the AMD PTDMA DMA driver.\nOn AMD systems, a kernel WARNING message is\nencountered, which is being issued from\nskb_release_head_state() due to in_hardirq()\nbeing true.\n\nBesides the user visible WARNING from the kernel,\nthe other symptom of this bug was that TCP/IP performance\nacross the ntb_netdev interface was very poor, i.e.\napproximately an order of magnitude below what was\nexpected. With the repair to use dev_kfree_skb_any(),\nkernel WARNINGs from skb_release_head_state() ceased\nand TCP/IP performance, as measured by iperf, was on\npar with expected results, approximately 20 Gb/s on\nAMD Milan based server. Note that this performance\nis comparable with Intel based servers." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ntb_netdev.c" ], "versions": [ { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "d4460c82177899751975180c268f352893302221", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "dd860b39aa7c7b82e6c99b6fdb99d4610ce49d67", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "8b78493968ed3cef0326183ed059c55e42f24d5b", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "a6b9e09403102bdf8402dae734800e4916c7ea58", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "13286ad1c7c49c606fdcba4cf66f953a1a16c1ca", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "21296a52caa6a6bad6debdfe40ad81d4f1a27e69", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "14d245da57a11e80277ab455aa9b6dcc5ed38a19", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "07e28a8f450217db679802ebd4de0915556ce846", "status": "affected", "versionType": "git" }, { "version": "548c237c0a9972df5d1afaca38aa733ee577128d", "lessThan": "5f7d78b2b12a9d561f48fa00bab29b40f4616dad", "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/ntb_netdev.c" ], "versions": [ { "version": "3.9", "status": "affected" }, { "version": "0", "lessThan": "3.9", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "3.9", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d4460c82177899751975180c268f352893302221" }, { "url": "https://git.kernel.org/stable/c/dd860b39aa7c7b82e6c99b6fdb99d4610ce49d67" }, { "url": "https://git.kernel.org/stable/c/8b78493968ed3cef0326183ed059c55e42f24d5b" }, { "url": "https://git.kernel.org/stable/c/a6b9e09403102bdf8402dae734800e4916c7ea58" }, { "url": "https://git.kernel.org/stable/c/13286ad1c7c49c606fdcba4cf66f953a1a16c1ca" }, { "url": "https://git.kernel.org/stable/c/21296a52caa6a6bad6debdfe40ad81d4f1a27e69" }, { "url": "https://git.kernel.org/stable/c/14d245da57a11e80277ab455aa9b6dcc5ed38a19" }, { "url": "https://git.kernel.org/stable/c/07e28a8f450217db679802ebd4de0915556ce846" }, { "url": "https://git.kernel.org/stable/c/5f7d78b2b12a9d561f48fa00bab29b40f4616dad" } ], "title": "ntb_netdev: Use dev_kfree_skb_any() in interrupt context", "x_generator": { "engine": "bippy-1.2.0" } } } }