{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50728", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T12:20:40.330Z", "datePublished": "2025-12-24T12:22:49.001Z", "dateUpdated": "2026-05-11T19:24:22.183Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:24:22.183Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/lcs: Fix return type of lcs_start_xmit()\n\nWith clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),\nindirect call targets are validated against the expected function\npointer prototype to make sure the call target is valid to help mitigate\nROP attacks. If they are not identical, there is a failure at run time,\nwhich manifests as either a kernel panic or thread getting killed. A\nproposed warning in clang aims to catch these at compile time, which\nreveals:\n\n drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]\n .ndo_start_xmit = lcs_start_xmit,\n ^~~~~~~~~~~~~~\n drivers/s390/net/lcs.c:2097:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]\n .ndo_start_xmit = lcs_start_xmit,\n ^~~~~~~~~~~~~~\n\n->ndo_start_xmit() in 'struct net_device_ops' expects a return type of\n'netdev_tx_t', not 'int'. Adjust the return type of lcs_start_xmit() to\nmatch the prototype's to resolve the warning and potential CFI failure,\nshould s390 select ARCH_SUPPORTS_CFI_CLANG in the future." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/s390/net/lcs.c" ], "versions": [ { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "7b4da3fcd513b8e67823eb80da37aad99b3339c1", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "d49cc2b705711fb8fb849e7c660929b2100360b7", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "e684215d8a903752e2b0cc946517fb61e57a880a", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "20022d551f2064a194d8e0acb6cd7a85094a17b2", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "ebc3c77785dc8b5b626309c0032a38fbb139287a", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "5ad774fb823c24bbeb21a15a67103ea7a6f5b928", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "69669820844f81a77b6db24b86581320ae4d17af", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "cda74cdc280ba35c8993e7517bac5c257ff36f18", "status": "affected", "versionType": "git" }, { "version": "dc1f8bf68b311b1537cb65893430b6796118498a", "lessThan": "bb16db8393658e0978c3f0d30ae069e878264fa3", "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/s390/net/lcs.c" ], "versions": [ { "version": "2.6.32", "status": "affected" }, { "version": "0", "lessThan": "2.6.32", "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": "2.6.32", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7b4da3fcd513b8e67823eb80da37aad99b3339c1" }, { "url": "https://git.kernel.org/stable/c/d49cc2b705711fb8fb849e7c660929b2100360b7" }, { "url": "https://git.kernel.org/stable/c/e684215d8a903752e2b0cc946517fb61e57a880a" }, { "url": "https://git.kernel.org/stable/c/20022d551f2064a194d8e0acb6cd7a85094a17b2" }, { "url": "https://git.kernel.org/stable/c/ebc3c77785dc8b5b626309c0032a38fbb139287a" }, { "url": "https://git.kernel.org/stable/c/5ad774fb823c24bbeb21a15a67103ea7a6f5b928" }, { "url": "https://git.kernel.org/stable/c/69669820844f81a77b6db24b86581320ae4d17af" }, { "url": "https://git.kernel.org/stable/c/cda74cdc280ba35c8993e7517bac5c257ff36f18" }, { "url": "https://git.kernel.org/stable/c/bb16db8393658e0978c3f0d30ae069e878264fa3" } ], "title": "s390/lcs: Fix return type of lcs_start_xmit()", "x_generator": { "engine": "bippy-1.2.0" } } } }