{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-45019", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-21T05:34:56.683Z", "datePublished": "2024-09-11T15:13:53.933Z", "dateUpdated": "2026-08-05T11:37:43.782Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:37:43.782Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Take state lock during tx timeout reporter\n\nmlx5e_safe_reopen_channels() requires the state lock taken. The\nreferenced changed in the Fixes tag removed the lock to fix another\nissue. This patch adds it back but at a later point (when calling\nmlx5e_safe_reopen_channels()) to avoid the deadlock referenced in the\nFixes tag." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The defect is a missing mutex in the mlx5e driver's local error-recovery path; the racing accesses come from local interfaces (`ndo_get_stats64` via /proc/net/dev, ip -s link, ethtool/netlink stats) rather than from parsing remote data. No remote peer input reaches the vulnerable function.\nAC:L - No lock is taken at all, and the unprotected window spans a full channel teardown/rebuild (firmware commands plus synchronize_net()), so the attacker-controlled side of the race — continuously requeuing `mlx5e_update_stats_work()` by looping on unprivileged stats reads — hits it reliably rather than depending on a narrow timing window.\nPR:L - Driving the racing `state_lock` holder requires only an unprivileged local account: `mlx5e_get_stats()` queues `mlx5e_update_stats_work()` and is reachable from `cat /proc/net/dev`, `ip -s link`, or `/sys/class/net/*/statistics/*` with no capability check.\nUI:N - The recovery work runs from a kernel workqueue and the stats path is driven entirely by the attacker's own reads; no victim action is required.\nS:U - The corrupted objects (`priv->channels`, `mlx5e_channel`, `mlx5e_selq`) all belong to the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `mlx5e_close_channels()` kvfree()s each channel and kfree()s the `chs->c` array while the concurrent stats worker still dereferences them, giving a use-after-free read of slab memory that the attacker can groom (the same path immediately reallocates channels), which can be leveraged to disclose kernel memory.\nI:H - The same use-after-free on freed and reallocated channel/SQ/RQ objects yields attacker-influenceable pointer dereferences, and the unsynchronized `mlx5e_selq_prepare_params()`/`mlx5e_selq_apply()` sequence can publish inconsistent queue-selection parameters — both are exploitable for memory corruption.\nA:H - The race reliably produces a use-after-free/inconsistent `priv->channels` state leading to an oops or NIC-recovery failure (plus lockdep/WARN splats), taking down the network device and potentially the machine." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c" ], "versions": [ { "version": "514232495aa523641febaa58b687fe6df1cd0b73", "lessThan": "03d3734bd692affe4d0e9c9d638f491aaf37411b", "status": "affected", "versionType": "git" }, { "version": "8ce3d969348a7c7fa3469588eb1319f9f3cc0eaa", "lessThan": "b3b9a87adee97854bcd71057901d46943076267e", "status": "affected", "versionType": "git" }, { "version": "eab0da38912ebdad922ed0388209f7eb0a5163cd", "lessThan": "8e57e66ecbdd2fddc9fbf3e984b1c523b70e9809", "status": "affected", "versionType": "git" }, { "version": "eab0da38912ebdad922ed0388209f7eb0a5163cd", "lessThan": "e6b5afd30b99b43682a7764e1a74a42fe4d5f4b3", "status": "affected", "versionType": "git" }, { "version": "6.1.69", "lessThan": "6.1.107", "status": "affected", "versionType": "semver" }, { "version": "6.6.8", "lessThan": "6.6.48", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c" ], "versions": [ { "version": "6.7", "status": "affected" }, { "version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.107", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.48", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.7", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "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": "6.1.69", "versionEndExcluding": "6.1.107" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.8", "versionEndExcluding": "6.6.48" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.10.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/03d3734bd692affe4d0e9c9d638f491aaf37411b" }, { "url": "https://git.kernel.org/stable/c/b3b9a87adee97854bcd71057901d46943076267e" }, { "url": "https://git.kernel.org/stable/c/8e57e66ecbdd2fddc9fbf3e984b1c523b70e9809" }, { "url": "https://git.kernel.org/stable/c/e6b5afd30b99b43682a7764e1a74a42fe4d5f4b3" } ], "title": "net/mlx5e: Take state lock during tx timeout reporter", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-09-29T15:48:31.371644Z", "id": "CVE-2024-45019", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-29T15:48:46.673Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:15:26.924Z" } } ] } }