| { |
| "containers": { |
| "cna": { |
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| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
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| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmei: vsc: Fix fortify-panic caused by invalid counted_by() use\n\ngcc 15 honors the __counted_by(len) attribute on vsc_tp_packet.buf[]\nand the vsc-tp.c code is using this in a wrong way. len does not contain\nthe available size in the buffer, it contains the actual packet length\n*without* the crc. So as soon as vsc_tp_xfer() tries to add the crc to\nbuf[] the fortify-panic handler gets triggered:\n\n[ 80.842193] memcpy: detected buffer overflow: 4 byte write of buffer size 0\n[ 80.842243] WARNING: CPU: 4 PID: 272 at lib/string_helpers.c:1032 __fortify_report+0x45/0x50\n...\n[ 80.843175] __fortify_panic+0x9/0xb\n[ 80.843186] vsc_tp_xfer.cold+0x67/0x67 [mei_vsc_hw]\n[ 80.843210] ? seqcount_lockdep_reader_access.constprop.0+0x82/0x90\n[ 80.843229] ? lockdep_hardirqs_on+0x7c/0x110\n[ 80.843250] mei_vsc_hw_start+0x98/0x120 [mei_vsc]\n[ 80.843270] mei_reset+0x11d/0x420 [mei]\n\nThe easiest fix would be to just drop the counted-by but with the exception\nof the ack buffer in vsc_tp_xfer_helper() which only contains enough room\nfor the packet-header, all other uses of vsc_tp_packet always use a buffer\nof VSC_TP_MAX_XFER_SIZE bytes for the packet.\n\nInstead of just dropping the counted-by, split the vsc_tp_packet struct\ndefinition into a header and a full-packet definition and use a fixed\nsize buf[] in the packet definition, this way fortify-source buffer\noverrun checking still works when enabled." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/misc/mei/vsc-tp.c" |
| ], |
| "versions": [ |
| { |
| "version": "566f5ca9768075e453b7b51a397733968df4287d", |
| "lessThan": "3e243378f27cc7d11682a3ad720228b0723affa5", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "566f5ca9768075e453b7b51a397733968df4287d", |
| "lessThan": "ac04663c67f244810b3492e9ecd9f7cdbefeca2d", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "566f5ca9768075e453b7b51a397733968df4287d", |
| "lessThan": "00f1cc14da0f06d2897b8c528df7c7dcf1b8da50", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/misc/mei/vsc-tp.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.8", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.8", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.26", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14.5", |
| "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": "6.8", |
| "versionEndExcluding": "6.12.26" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.8", |
| "versionEndExcluding": "6.14.5" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.8", |
| "versionEndExcluding": "6.15" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/3e243378f27cc7d11682a3ad720228b0723affa5" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ac04663c67f244810b3492e9ecd9f7cdbefeca2d" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/00f1cc14da0f06d2897b8c528df7c7dcf1b8da50" |
| } |
| ], |
| "title": "mei: vsc: Fix fortify-panic caused by invalid counted_by() use", |
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| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-37816", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
