| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: use the workqueue to destroy unaccepted sockets\n\nChristoph reported a UaF at token lookup time after having\nrefactored the passive socket initialization part:\n\n BUG: KASAN: use-after-free in __token_bucket_busy+0x253/0x260\n Read of size 4 at addr ffff88810698d5b0 by task syz-executor653/3198\n\n CPU: 1 PID: 3198 Comm: syz-executor653 Not tainted 6.2.0-rc59af4eaa31c1f6c00c8f1e448ed99a45c66340dd5 #6\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n Call Trace:\n <TASK>\n dump_stack_lvl+0x6e/0x91\n print_report+0x16a/0x46f\n kasan_report+0xad/0x130\n __token_bucket_busy+0x253/0x260\n mptcp_token_new_connect+0x13d/0x490\n mptcp_connect+0x4ed/0x860\n __inet_stream_connect+0x80e/0xd90\n tcp_sendmsg_fastopen+0x3ce/0x710\n mptcp_sendmsg+0xff1/0x1a20\n inet_sendmsg+0x11d/0x140\n __sys_sendto+0x405/0x490\n __x64_sys_sendto+0xdc/0x1b0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nWe need to properly clean-up all the paired MPTCP-level\nresources and be sure to release the msk last, even when\nthe unaccepted subflow is destroyed by the TCP internals\nvia inet_child_forget().\n\nWe can re-use the existing MPTCP_WORK_CLOSE_SUBFLOW infra,\nexplicitly checking that for the critical scenario: the\nclosed subflow is the MPC one, the msk is not accepted and\neventually going through full cleanup.\n\nWith such change, __mptcp_destroy_sock() is always called\non msk sockets, even on accepted ones. We don't need anymore\nto transiently drop one sk reference at msk clone time.\n\nPlease note this commit depends on the parent one:\n\n mptcp: refactor passive socket initialization" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/mptcp/protocol.c", |
| "net/mptcp/protocol.h", |
| "net/mptcp/subflow.c" |
| ], |
| "versions": [ |
| { |
| "version": "58b09919626bf9067345289212ec030c61eb1034", |
| "lessThan": "2827f099b3fb9a59263c997400e9182f5d423e84", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "58b09919626bf9067345289212ec030c61eb1034", |
| "lessThan": "804cf487fb0031f3c74755b78d8663333f0ba636", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "58b09919626bf9067345289212ec030c61eb1034", |
| "lessThan": "b6985b9b82954caa53f862d6059d06c0526254f0", |
| "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/mptcp/protocol.c", |
| "net/mptcp/protocol.h", |
| "net/mptcp/subflow.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.7", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.7", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.22", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.2.8", |
| "lessThanOrEqual": "6.2.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.3", |
| "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": "5.7", |
| "versionEndExcluding": "6.1.22" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.7", |
| "versionEndExcluding": "6.2.8" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.7", |
| "versionEndExcluding": "6.3" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/2827f099b3fb9a59263c997400e9182f5d423e84" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/804cf487fb0031f3c74755b78d8663333f0ba636" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b6985b9b82954caa53f862d6059d06c0526254f0" |
| } |
| ], |
| "title": "mptcp: use the workqueue to destroy unaccepted sockets", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2023-53072", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
