{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49325", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.538Z", "datePublished": "2025-02-26T02:10:48.158Z", "dateUpdated": "2025-05-04T08:35:14.345Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:35:14.345Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: add accessors to read/set tp->snd_cwnd\n\nWe had various bugs over the years with code\nbreaking the assumption that tp->snd_cwnd is greater\nthan zero.\n\nLately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added\nin commit 8b8a321ff72c (\"tcp: fix zero cwnd in tcp_cwnd_reduction\")\ncan trigger, and without a repro we would have to spend\nconsiderable time finding the bug.\n\nInstead of complaining too late, we want to catch where\nand when tp->snd_cwnd is set to an illegal value."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/tcp.h", "include/trace/events/tcp.h", "net/core/filter.c", "net/ipv4/tcp.c", "net/ipv4/tcp_bbr.c", "net/ipv4/tcp_bic.c", "net/ipv4/tcp_cdg.c", "net/ipv4/tcp_cong.c", "net/ipv4/tcp_cubic.c", "net/ipv4/tcp_dctcp.c", "net/ipv4/tcp_highspeed.c", "net/ipv4/tcp_htcp.c", "net/ipv4/tcp_hybla.c", "net/ipv4/tcp_illinois.c", "net/ipv4/tcp_input.c", "net/ipv4/tcp_ipv4.c", "net/ipv4/tcp_lp.c", "net/ipv4/tcp_metrics.c", "net/ipv4/tcp_nv.c", "net/ipv4/tcp_output.c", "net/ipv4/tcp_rate.c", "net/ipv4/tcp_scalable.c", "net/ipv4/tcp_vegas.c", "net/ipv4/tcp_veno.c", "net/ipv4/tcp_westwood.c", "net/ipv4/tcp_yeah.c", "net/ipv6/tcp_ipv6.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "3308676ec525901bf1656014003c443a60730a04", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5aba0ad44fb4a7fb78c5076c313456de199a3c29", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "41e191fe72282e193a7744e2fc1786b23156c9e4", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "40570375356c874b1578e05c1dcc3ff7c1322dbe", "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/net/tcp.h", "include/trace/events/tcp.h", "net/core/filter.c", "net/ipv4/tcp.c", "net/ipv4/tcp_bbr.c", "net/ipv4/tcp_bic.c", "net/ipv4/tcp_cdg.c", "net/ipv4/tcp_cong.c", "net/ipv4/tcp_cubic.c", "net/ipv4/tcp_dctcp.c", "net/ipv4/tcp_highspeed.c", "net/ipv4/tcp_htcp.c", "net/ipv4/tcp_hybla.c", "net/ipv4/tcp_illinois.c", "net/ipv4/tcp_input.c", "net/ipv4/tcp_ipv4.c", "net/ipv4/tcp_lp.c", "net/ipv4/tcp_metrics.c", "net/ipv4/tcp_nv.c", "net/ipv4/tcp_output.c", "net/ipv4/tcp_rate.c", "net/ipv4/tcp_scalable.c", "net/ipv4/tcp_vegas.c", "net/ipv4/tcp_veno.c", "net/ipv4/tcp_westwood.c", "net/ipv4/tcp_yeah.c", "net/ipv6/tcp_ipv6.c"], "versions": [{"version": "5.15.47", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.15", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.4", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.47"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.17.15"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.18.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04"}, {"url": "https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29"}, {"url": "https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4"}, {"url": "https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe"}], "title": "tcp: add accessors to read/set tp->snd_cwnd", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: add accessors to read/set tp->snd_cwnd\n\nWe had various bugs over the years with code\nbreaking the assumption that tp->snd_cwnd is greater\nthan zero.\n\nLately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added\nin commit 8b8a321ff72c (\"tcp: fix zero cwnd in tcp_cwnd_reduction\")\ncan trigger, and without a repro we would have to spend\nconsiderable time finding the bug.\n\nInstead of complaining too late, we want to catch where\nand when tp->snd_cwnd is set to an illegal value."}], "id": "CVE-2022-49325", "lastModified": "2025-02-26T07:01:09.323", "metrics": {}, "published": "2025-02-26T07:01:09.323", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3308676ec525901bf1656014003c443a60730a04"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40570375356c874b1578e05c1dcc3ff7c1322dbe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41e191fe72282e193a7744e2fc1786b23156c9e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5aba0ad44fb4a7fb78c5076c313456de199a3c29"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: tcp: add accessors to read/set tp->snd_cwnd", "id": "2348023", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348023"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntcp: add accessors to read/set tp->snd_cwnd\nWe had various bugs over the years with code\nbreaking the assumption that tp->snd_cwnd is greater\nthan zero.\nLately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added\nin commit 8b8a321ff72c (\"tcp: fix zero cwnd in tcp_cwnd_reduction\")\ncan trigger, and without a repro we would have to spend\nconsiderable time finding the bug.\nInstead of complaining too late, we want to catch where\nand when tp->snd_cwnd is set to an illegal value."], "name": "CVE-2022-49325", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49325\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49325\nhttps://lore.kernel.org/linux-cve-announce/2025022638-CVE-2022-49325-a2ac@gregkh/T"], "threat_severity": "Moderate"}