| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/iucv: fix use after free in iucv_sock_close()\n\niucv_sever_path() is called from process context and from bh context.\niucv->path is used as indicator whether somebody else is taking care of\nsevering the path (or it is already removed / never existed).\nThis needs to be done with atomic compare and swap, otherwise there is a\nsmall window where iucv_sock_close() will try to work with a path that has\nalready been severed and freed by iucv_callback_connrej() called by\niucv_tasklet_fn().\n\nExample:\n[452744.123844] Call Trace:\n[452744.123845] ([<0000001e87f03880>] 0x1e87f03880)\n[452744.123966] [<00000000d593001e>] iucv_path_sever+0x96/0x138\n[452744.124330] [<000003ff801ddbca>] iucv_sever_path+0xc2/0xd0 [af_iucv]\n[452744.124336] [<000003ff801e01b6>] iucv_sock_close+0xa6/0x310 [af_iucv]\n[452744.124341] [<000003ff801e08cc>] iucv_sock_release+0x3c/0xd0 [af_iucv]\n[452744.124345] [<00000000d574794e>] __sock_release+0x5e/0xe8\n[452744.124815] [<00000000d5747a0c>] sock_close+0x34/0x48\n[452744.124820] [<00000000d5421642>] __fput+0xba/0x268\n[452744.124826] [<00000000d51b382c>] task_work_run+0xbc/0xf0\n[452744.124832] [<00000000d5145710>] do_notify_resume+0x88/0x90\n[452744.124841] [<00000000d5978096>] system_call+0xe2/0x2c8\n[452744.125319] Last Breaking-Event-Address:\n[452744.125321] [<00000000d5930018>] iucv_path_sever+0x90/0x138\n[452744.125324]\n[452744.125325] Kernel panic - not syncing: Fatal exception in interrupt\n\nNote that bh_lock_sock() is not serializing the tasklet context against\nprocess context, because the check for sock_owned_by_user() and\ncorresponding handling is missing.\n\nIdeas for a future clean-up patch:\nA) Correct usage of bh_lock_sock() in tasklet context, as described in\nRe-enqueue, if needed. This may require adding return values to the\ntasklet functions and thus changes to all users of iucv.\n\nB) Change iucv tasklet into worker and use only lock_sock() in af_iucv." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/iucv/af_iucv.c" |
| ], |
| "versions": [ |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "84f40b46787ecb67c7ad08a5bb1376141fa10c01", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "37652fbef9809411cea55ea5fa1a170e299efcd0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "c65f72eec60a34ace031426e04e9aff8e5f04895", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "ac758e1f663fe9bc64f6b47212a2aa18697524f5", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "8b424c9e44111c5a76f41c6b741f8d4c4179d876", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "01437282fd3904810603f3dc98d2cac6b8b6fc84", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "69620522c48ce8215e5eb55ffbab8cafee8f407d", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "7d316b9453523498246e9e19a659c423d4c5081e", |
| "lessThan": "f558120cd709682b739207b48cf7479fd9568431", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/iucv/af_iucv.c" |
| ], |
| "versions": [ |
| { |
| "version": "3.4", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.4", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.320", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.282", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.224", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.165", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.104", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.45", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.10.4", |
| "lessThanOrEqual": "6.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11", |
| "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": "3.4", |
| "versionEndExcluding": "4.19.320" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.4", |
| "versionEndExcluding": "5.4.282" |
| }, |
| { |
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| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.4", |
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| }, |
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| "versionStartIncluding": "3.4", |
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| }, |
| { |
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| "versionStartIncluding": "3.4", |
| "versionEndExcluding": "6.6.45" |
| }, |
| { |
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| "versionStartIncluding": "3.4", |
| "versionEndExcluding": "6.10.4" |
| }, |
| { |
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| "versionStartIncluding": "3.4", |
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| } |
| ] |
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| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/84f40b46787ecb67c7ad08a5bb1376141fa10c01" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/37652fbef9809411cea55ea5fa1a170e299efcd0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c65f72eec60a34ace031426e04e9aff8e5f04895" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ac758e1f663fe9bc64f6b47212a2aa18697524f5" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8b424c9e44111c5a76f41c6b741f8d4c4179d876" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/01437282fd3904810603f3dc98d2cac6b8b6fc84" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/69620522c48ce8215e5eb55ffbab8cafee8f407d" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f558120cd709682b739207b48cf7479fd9568431" |
| } |
| ], |
| "title": "net/iucv: fix use after free in iucv_sock_close()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-42271", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
