| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener\n\nA listening socket linked to a sockmap has its sk_prot overridden. It\npoints to one of the struct proto variants in tcp_bpf_prots. The variant\ndepends on the socket's family and which sockmap programs are attached.\n\nA child socket cloned from a TCP listener initially inherits their sk_prot.\nBut before cloning is finished, we restore the child's proto to the\nlistener's original non-tcp_bpf_prots one. This happens in\ntcp_create_openreq_child -> tcp_bpf_clone.\n\nToday, in tcp_bpf_clone we detect if the child's proto should be restored\nby checking only for the TCP_BPF_BASE proto variant. This is not\ncorrect. The sk_prot of listening socket linked to a sockmap can point to\nto any variant in tcp_bpf_prots.\n\nIf the listeners sk_prot happens to be not the TCP_BPF_BASE variant, then\nthe child socket unintentionally is left if the inherited sk_prot by\ntcp_bpf_clone.\n\nThis leads to issues like infinite recursion on close [1], because the\nchild state is otherwise not set up for use with tcp_bpf_prot operations.\n\nAdjust the check in tcp_bpf_clone to detect all of tcp_bpf_prots variants.\n\nNote that it wouldn't be sufficient to check the socket state when\noverriding the sk_prot in tcp_bpf_update_proto in order to always use the\nTCP_BPF_BASE variant for listening sockets. Since commit\nb8b8315e39ff (\"bpf, sockmap: Remove unhash handler for BPF sockmap usage\")\nit is possible for a socket to transition to TCP_LISTEN state while already\nlinked to a sockmap, e.g. connect() -> insert into map ->\nconnect(AF_UNSPEC) -> listen().\n\n[1]: https://lore.kernel.org/all/00000000000073b14905ef2e7401@google.com/" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/linux/util_macros.h", |
| "net/ipv4/tcp_bpf.c" |
| ], |
| "versions": [ |
| { |
| "version": "e80251555f0befd1271e74b080bccf0ff0348bfc", |
| "lessThan": "9bd6074e1872d22190a8da30e796cbf937d334f0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "e80251555f0befd1271e74b080bccf0ff0348bfc", |
| "lessThan": "c681d7a4ed3d360de0574f4d6b7305a8de8dc54f", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "e80251555f0befd1271e74b080bccf0ff0348bfc", |
| "lessThan": "12b0ec7c6953e1602957926439e5297095d7d065", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "e80251555f0befd1271e74b080bccf0ff0348bfc", |
| "lessThan": "ddce1e091757d0259107c6c0c7262df201de2b66", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "include/linux/util_macros.h", |
| "net/ipv4/tcp_bpf.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.7", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.7", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.168", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.93", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.11", |
| "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": "5.7", |
| "versionEndExcluding": "5.10.168" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.7", |
| "versionEndExcluding": "5.15.93" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.7", |
| "versionEndExcluding": "6.1.11" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.7", |
| "versionEndExcluding": "6.2" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/9bd6074e1872d22190a8da30e796cbf937d334f0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c681d7a4ed3d360de0574f4d6b7305a8de8dc54f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/12b0ec7c6953e1602957926439e5297095d7d065" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ddce1e091757d0259107c6c0c7262df201de2b66" |
| } |
| ], |
| "title": "bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2023-52986", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
