| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()\n\nWhen enqueuing the first packet to an HFSC class, hfsc_enqueue() calls the\nchild qdisc's peek() operation before incrementing sch->q.qlen and\nsch->qstats.backlog. If the child qdisc uses qdisc_peek_dequeued(), this may\ntrigger an immediate dequeue and potential packet drop. In such cases,\nqdisc_tree_reduce_backlog() is called, but the HFSC qdisc's qlen and backlog\nhave not yet been updated, leading to inconsistent queue accounting. This\ncan leave an empty HFSC class in the active list, causing further\nconsequences like use-after-free.\n\nThis patch fixes the bug by moving the increment of sch->q.qlen and\nsch->qstats.backlog before the call to the child qdisc's peek() operation.\nThis ensures that queue length and backlog are always accurate when packet\ndrops or dequeues are triggered during the peek." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/sched/sch_hfsc.c" |
| ], |
| "versions": [ |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "1034e3310752e8675e313f7271b348914008719a", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "f9f593e34d2fb67644372c8f7b033bdc622ad228", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "89c301e929a0db14ebd94b4d97764ce1d6981653", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "f1dde3eb17dc1b8bd07aed00004b1e05fc87a3d4", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "93c276942e75de0e5bc91576300d292e968f5a02", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "49b21795b8e5654a7df3d910a12e1060da4c04cf", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "3f3a22eebbc32b4fa8ce9c1d5f9db214b45b9335", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "12d0ad3be9c3854e52ec74bb83bb6f43612827c7", |
| "lessThan": "3f981138109f63232a5fb7165938d4c945cc1b9d", |
| "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/sched/sch_hfsc.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.8", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.8", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.294", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.238", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.185", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.141", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.93", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.31", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14.9", |
| "lessThanOrEqual": "6.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.15", |
| "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": "4.8", |
| "versionEndExcluding": "5.4.294" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "5.10.238" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "5.15.185" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "6.1.141" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "6.6.93" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "6.12.31" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "6.14.9" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.8", |
| "versionEndExcluding": "6.15" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/1034e3310752e8675e313f7271b348914008719a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f9f593e34d2fb67644372c8f7b033bdc622ad228" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/89c301e929a0db14ebd94b4d97764ce1d6981653" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f1dde3eb17dc1b8bd07aed00004b1e05fc87a3d4" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/93c276942e75de0e5bc91576300d292e968f5a02" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/49b21795b8e5654a7df3d910a12e1060da4c04cf" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/3f3a22eebbc32b4fa8ce9c1d5f9db214b45b9335" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/3f981138109f63232a5fb7165938d4c945cc1b9d" |
| } |
| ], |
| "title": "sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-38000", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
