{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2021-47127", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-04T18:12:48.839Z", "datePublished": "2024-03-15T20:14:31.658Z", "dateUpdated": "2024-09-11T17:32:52.269Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:02:33.786Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: track AF_XDP ZC enabled queues in bitmap\n\nCommit c7a219048e45 (\"ice: Remove xsk_buff_pool from VSI structure\")\nsilently introduced a regression and broke the Tx side of AF_XDP in copy\nmode. xsk_pool on ice_ring is set only based on the existence of the XDP\nprog on the VSI which in turn picks ice_clean_tx_irq_zc to be executed.\nThat is not something that should happen for copy mode as it should use\nthe regular data path ice_clean_tx_irq.\n\nThis results in a following splat when xdpsock is run in txonly or l2fwd\nscenarios in copy mode:\n\n\n[ 106.050195] BUG: kernel NULL pointer dereference, address: 0000000000000030\n[ 106.057269] #PF: supervisor read access in kernel mode\n[ 106.062493] #PF: error_code(0x0000) - not-present page\n[ 106.067709] PGD 0 P4D 0\n[ 106.070293] Oops: 0000 [#1] PREEMPT SMP NOPTI\n[ 106.074721] CPU: 61 PID: 0 Comm: swapper/61 Not tainted 5.12.0-rc2+ #45\n[ 106.081436] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019\n[ 106.092027] RIP: 0010:xp_raw_get_dma+0x36/0x50\n[ 106.096551] Code: 74 14 48 b8 ff ff ff ff ff ff 00 00 48 21 f0 48 c1 ee 30 48 01 c6 48 8b 87 90 00 00 00 48 89 f2 81 e6 ff 0f 00 00 48 c1 ea 0c <48> 8b 04 d0 48 83 e0 fe 48 01 f0 c3 66 66 2e 0f 1f 84 00 00 00 00\n[ 106.115588] RSP: 0018:ffffc9000d694e50 EFLAGS: 00010206\n[ 106.120893] RAX: 0000000000000000 RBX: ffff88984b8c8a00 RCX: ffff889852581800\n[ 106.128137] RDX: 0000000000000006 RSI: 0000000000000000 RDI: ffff88984cd8b800\n[ 106.135383] RBP: ffff888123b50001 R08: ffff889896800000 R09: 0000000000000800\n[ 106.142628] R10: 0000000000000000 R11: ffffffff826060c0 R12: 00000000000000ff\n[ 106.149872] R13: 0000000000000000 R14: 0000000000000040 R15: ffff888123b50018\n[ 106.157117] FS: 0000000000000000(0000) GS:ffff8897e0f40000(0000) knlGS:0000000000000000\n[ 106.165332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 106.171163] CR2: 0000000000000030 CR3: 000000000560a004 CR4: 00000000007706e0\n[ 106.178408] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 106.185653] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 106.192898] PKRU: 55555554\n[ 106.195653] Call Trace:\n[ 106.198143] \n[ 106.200196] ice_clean_tx_irq_zc+0x183/0x2a0 [ice]\n[ 106.205087] ice_napi_poll+0x3e/0x590 [ice]\n[ 106.209356] __napi_poll+0x2a/0x160\n[ 106.212911] net_rx_action+0xd6/0x200\n[ 106.216634] __do_softirq+0xbf/0x29b\n[ 106.220274] irq_exit_rcu+0x88/0xc0\n[ 106.223819] common_interrupt+0x7b/0xa0\n[ 106.227719] \n[ 106.229857] asm_common_interrupt+0x1e/0x40\n\n\nFix this by introducing the bitmap of queues that are zero-copy enabled,\nwhere each bit, corresponding to a queue id that xsk pool is being\nconfigured on, will be set/cleared within ice_xsk_pool_{en,dis}able and\nchecked within ice_xsk_pool(). The latter is a function used for\ndeciding which napi poll routine is executed.\nIdea is being taken from our other drivers such as i40e and ixgbe." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/intel/ice/ice.h", "drivers/net/ethernet/intel/ice/ice_lib.c", "drivers/net/ethernet/intel/ice/ice_xsk.c" ], "versions": [ { "version": "c7a219048e45", "lessThan": "1d34fa4fcf06", "status": "affected", "versionType": "git" }, { "version": "c7a219048e45", "lessThan": "e102db780e1c", "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/net/ethernet/intel/ice/ice.h", "drivers/net/ethernet/intel/ice/ice_lib.c", "drivers/net/ethernet/intel/ice/ice_xsk.c" ], "versions": [ { "version": "5.12", "status": "affected" }, { "version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "custom" }, { "version": "5.12.10", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1d34fa4fcf06649036ba0c97854fcf7a741ee18c" }, { "url": "https://git.kernel.org/stable/c/e102db780e1c14f10c70dafa7684af22a745b51d" } ], "title": "ice: track AF_XDP ZC enabled queues in bitmap", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.881Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/1d34fa4fcf06649036ba0c97854fcf7a741ee18c", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e102db780e1c14f10c70dafa7684af22a745b51d", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-47127", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:55:26.106391Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:32:52.269Z" } } ] } }