{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48743", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-20T11:09:39.054Z", "datePublished": "2024-06-20T11:13:27.312Z", "dateUpdated": "2026-08-05T08:52:05.665Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:52:05.665Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: amd-xgbe: Fix skb data length underflow\n\nThere will be BUG_ON() triggered in include/linux/skbuff.h leading to\nintermittent kernel panic, when the skb length underflow is detected.\n\nFix this by dropping the packet if such length underflows are seen\nbecause of inconsistencies in the hardware descriptors." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The vulnerable code is in amd-xgbe's NAPI RX path (xgbe_rx_poll), which processes frames delivered to AMD 10GbE NICs on internet-facing servers; a remote attacker’s packets reach this path after routing without needing local access.\nAC:H - The fix and commit message attribute the underflow to intermittent hardware descriptor inconsistencies (PL vs. accumulated buffer lengths) that the attacker cannot reliably force, matching CVSS conditions beyond attacker control.\nPR:N - Triggering the RX path requires only sending frames to the interface; no authentication, local account, or capability is needed.\nUI:N - Exploitation needs no victim action such as mounting a device or opening a file; traffic received by the NIC is sufficient.\nS:U - Impact stays within the host kernel’s security authority (crash/memory corruption in the driver/stack); it does not cross a VM, IOMMU, or other security boundary.\nC:H - When buf2_len underflows or exceeds the DMA buffer, skb_add_rx_frag installs an oversized frag, enabling out-of-bounds reads of adjacent memory when the skb is processed.\nI:H - The same length underflow corrupts skb->len/data_len and frag metadata before the BUG_ON, yielding memory corruption that can be leveraged toward control-flow or further write primitives, consistent with similar ethernet underflow scorings.\nA:H - The bad skb lengths trigger BUG_ON(skb->len < skb->data_len) in skbuff.h (e.g. via skb_pull in eth_type_trans), causing an intermittent kernel panic as described in the fix." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/amd/xgbe/xgbe-drv.c" ], "versions": [ { "version": "fafc9555d87a19c78bcd43ed731c3a73bf0b37a9", "lessThan": "9924c80bd484340191e586110ca22bff23a49f2e", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "617f9934bb37993b9813832516f318ba874bcb7d", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "34aeb4da20f93ac80a6291a2dbe7b9c6460e9b26", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "9892742f035f7aa7dcd2bb0750effa486db89576", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "4d3fcfe8464838b3920bc2b939d888e0b792934e", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "db6fd92316a254be2097556f01bccecf560e53ce", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "e8f73f620fee5f52653ed2da360121e4446575c5", "status": "affected", "versionType": "git" }, { "version": "622c36f143fc9566ba49d7cec994c2da1182d9e2", "lessThan": "5aac9108a180fc06e28d4e7fb00247ce603b72ee", "status": "affected", "versionType": "git" }, { "version": "ae43f9360a21b35cf785ae9a0fdce524d7af0938", "status": "affected", "versionType": "git" }, { "version": "ae9d577f3dbb686862b7d0dc9cc73054f0964d4d", "status": "affected", "versionType": "git" }, { "version": "4.9.19", "lessThan": "4.9.300", "status": "affected", "versionType": "semver" }, { "version": "4.4.58", "lessThan": "4.5", "status": "affected", "versionType": "semver" }, { "version": "4.10.7", "lessThan": "4.11", "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/amd/xgbe/xgbe-drv.c" ], "versions": [ { "version": "4.11", "status": "affected" }, { "version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.300", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.265", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.228", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.177", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.97", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.20", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16.6", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": 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