{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-49982", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.052Z", "datePublished": "2024-10-21T18:02:27.820Z", "dateUpdated": "2026-08-05T11:40:51.528Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:40:51.528Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: fix the potential use-after-free problem in more places\n\nFor fixing CVE-2023-6270, f98364e92662 (\"aoe: fix the potential\nuse-after-free problem in aoecmd_cfg_pkts\") makes tx() calling dev_put()\ninstead of doing in aoecmd_cfg_pkts(). It avoids that the tx() runs\ninto use-after-free.\n\nThen Nicolai Stange found more places in aoe have potential use-after-free\nproblem with tx(). e.g. revalidate(), aoecmd_ata_rw(), resend(), probe()\nand aoecmd_cfg_rsp(). Those functions also use aoenet_xmit() to push\npacket to tx queue. So they should also use dev_hold() to increase the\nrefcnt of skb->dev.\n\nOn the other hand, moving dev_put() to tx() causes that the refcnt of\nskb->dev be reduced to a negative value, because corresponding\ndev_hold() are not called in revalidate(), aoecmd_ata_rw(), resend(),\nprobe(), and aoecmd_cfg_rsp(). This patch fixed this issue." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The strongest path is `aoenet_rcv()` → `aoecmd_cfg_rsp()` → `aoecmd_ata_id()`, driven purely by a received AoE frame; AoE is a raw EtherType-0x88A2 Layer-2 protocol with no IP encapsulation, so the attacker must be on the same Ethernet/LAN segment (SAN VLAN, cloud L2 network, shared switch).\nAC:L - The refcount underflow is deterministic — one leaked `dev_put()` per transmitted packet with no race to win — and the attacker fully controls the trigger rate by injecting AoE config responses (and the retransmit timer keeps draining references autonomously afterwards).\nPR:N - `aoecmd_cfg_rsp()` is invoked from the packet handler on unsolicited frames with zero authentication, and it auto-allocates an aoedev and target from attacker-supplied shelf/slot/MAC, so no credentials or local account are needed.\nUI:N - The vulnerable code runs in softirq/packet-receive and timer context as soon as the frame arrives; no administrator or user action is required beyond the aoe driver being loaded.\nS:U - The corrupted `struct net_device` and the resulting memory corruption are entirely within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - Premature free of a live `struct net_device` yields a use-after-free on a large, widely-referenced kernel object that can be reclaimed and re-sprayed by the attacker, giving an arbitrary kernel-memory read primitive and disclosure of adjacent slab contents.\nI:H - The same UAF permits reallocating the freed `net_device` with attacker-controlled data, corrupting embedded function pointers (`net_device_ops`, `header_ops`) for a write/control-flow-hijack primitive leading to arbitrary kernel code execution.\nA:H - Even without exploitation, the negative refcount trips `BUG_ON(netdev_refcnt_read(dev) != 1)` in `free_netdev()` and causes use-after-free dereferences of the freed device in the transmit path, producing a kernel oops/panic that is trivially reproducible by an unauthenticated LAN host." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/block/aoe/aoecmd.c" ], "versions": [ { "version": "ad80c34944d7175fa1f5c7a55066020002921a99", "lessThan": "12f7b89dd72b25da4eeaa22097877963cad6418e", "status": "affected", "versionType": "git" }, { "version": "1a54aa506b3b2f31496731039e49778f54eee881", "lessThan": "a786265aecf39015418e4f930cc1c14603a01490", "status": "affected", "versionType": "git" }, { "version": "faf0b4c5e00bb680e8e43ac936df24d3f48c8e65", "lessThan": "f63461af2c1a86af4217910e47a5c46e3372e645", "status": "affected", "versionType": "git" }, { "version": "7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4", "lessThan": "07b418d50ccbbca7e5d87a3a0d41d436cefebf79", "status": "affected", "versionType": "git" }, { "version": "74ca3ef68d2f449bc848c0a814cefc487bf755fa", "lessThan": "bc2cbf7525ac288e07d465f5a1d8cb8fb9599254", "status": "affected", "versionType": "git" }, { "version": "eb48680b0255a9e8a9bdc93d6a55b11c31262e62", "lessThan": "acc5103a0a8c200a52af7d732c36a8477436a3d3", "status": "affected", "versionType": "git" }, { "version": "f98364e926626c678fb4b9004b75cacf92ff0662", "lessThan": "89d9a69ae0c667e4d9d028028e2dcc837bae626f", "status": "affected", "versionType": "git" }, { "version": "f98364e926626c678fb4b9004b75cacf92ff0662", "lessThan": "8253a60c89ec35c8f36fb2cc08cdf854c7a3eb58", "status": "affected", "versionType": "git" }, { "version": "f98364e926626c678fb4b9004b75cacf92ff0662", "lessThan": "6d6e54fc71ad1ab0a87047fd9c211e75d86084a3", "status": "affected", "versionType": "git" }, { "version": "079cba4f4e307c69878226fdf5228c20aa1c969c", "status": "affected", "versionType": "git" }, { "version": "a16fbb80064634b254520a46395e36b87ca4731e", "status": "affected", "versionType": "git" }, { "version": "4.19.311", "lessThan": "4.19.323", "status": "affected", "versionType": "semver" }, { "version": "5.4.273", "lessThan": "5.4.285", "status": "affected", "versionType": "semver" }, { "version": "5.10.214", "lessThan": "5.10.227", "status": "affected", "versionType": "semver" }, { "version": "5.15.153", "lessThan": "5.15.168", "status": "affected", "versionType": "semver" }, { "version": "6.1.83", "lessThan": "6.1.113", "status": "affected", "versionType": "semver" }, { "version": "6.6.23", "lessThan": "6.6.55", "status": "affected", "versionType": "semver" }, { "version": "6.7.11", "lessThan": "6.8", "status": "affected", "versionType": "semver" }, { "version": "6.8.2", "lessThan": "6.9", "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/block/aoe/aoecmd.c" ], "versions": [ { "version": "6.9", "status": "affected" }, { "version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.323", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.227", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.168", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.113", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.55", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.14", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.3", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "4.19.311", "versionEndExcluding": "4.19.323" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.273", "versionEndExcluding": "5.4.285" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.214", "versionEndExcluding": "5.10.227" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.153", "versionEndExcluding": "5.15.168" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.83", "versionEndExcluding": "6.1.113" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.23", "versionEndExcluding": "6.6.55" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.10.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.11.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/12f7b89dd72b25da4eeaa22097877963cad6418e" }, { "url": "https://git.kernel.org/stable/c/a786265aecf39015418e4f930cc1c14603a01490" }, { "url": "https://git.kernel.org/stable/c/f63461af2c1a86af4217910e47a5c46e3372e645" }, { "url": "https://git.kernel.org/stable/c/07b418d50ccbbca7e5d87a3a0d41d436cefebf79" }, { "url": "https://git.kernel.org/stable/c/bc2cbf7525ac288e07d465f5a1d8cb8fb9599254" }, { "url": "https://git.kernel.org/stable/c/acc5103a0a8c200a52af7d732c36a8477436a3d3" }, { "url": "https://git.kernel.org/stable/c/89d9a69ae0c667e4d9d028028e2dcc837bae626f" }, { "url": "https://git.kernel.org/stable/c/8253a60c89ec35c8f36fb2cc08cdf854c7a3eb58" }, { "url": "https://git.kernel.org/stable/c/6d6e54fc71ad1ab0a87047fd9c211e75d86084a3" } ], "title": "aoe: fix the potential use-after-free problem in more places", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-49982", "role": "CISA 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