| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data\n\nIn case the non-paged data of a SKB carries protocol header and protocol\npayload to be transmitted on a certain platform that the DMA AXI address\nwidth is configured to 40-bit/48-bit, or the size of the non-paged data\nis bigger than TSO_MAX_BUFF_SIZE on a certain platform that the DMA AXI\naddress width is configured to 32-bit, then this SKB requires at least\ntwo DMA transmit descriptors to serve it.\n\nFor example, three descriptors are allocated to split one DMA buffer\nmapped from one piece of non-paged data:\n dma_desc[N + 0],\n dma_desc[N + 1],\n dma_desc[N + 2].\nThen three elements of tx_q->tx_skbuff_dma[] will be allocated to hold\nextra information to be reused in stmmac_tx_clean():\n tx_q->tx_skbuff_dma[N + 0],\n tx_q->tx_skbuff_dma[N + 1],\n tx_q->tx_skbuff_dma[N + 2].\nNow we focus on tx_q->tx_skbuff_dma[entry].buf, which is the DMA buffer\naddress returned by DMA mapping call. stmmac_tx_clean() will try to\nunmap the DMA buffer _ONLY_IF_ tx_q->tx_skbuff_dma[entry].buf\nis a valid buffer address.\n\nThe expected behavior that saves DMA buffer address of this non-paged\ndata to tx_q->tx_skbuff_dma[entry].buf is:\n tx_q->tx_skbuff_dma[N + 0].buf = NULL;\n tx_q->tx_skbuff_dma[N + 1].buf = NULL;\n tx_q->tx_skbuff_dma[N + 2].buf = dma_map_single();\nUnfortunately, the current code misbehaves like this:\n tx_q->tx_skbuff_dma[N + 0].buf = dma_map_single();\n tx_q->tx_skbuff_dma[N + 1].buf = NULL;\n tx_q->tx_skbuff_dma[N + 2].buf = NULL;\n\nOn the stmmac_tx_clean() side, when dma_desc[N + 0] is closed by the\nDMA engine, tx_q->tx_skbuff_dma[N + 0].buf is a valid buffer address\nobviously, then the DMA buffer will be unmapped immediately.\nThere may be a rare case that the DMA engine does not finish the\npending dma_desc[N + 1], dma_desc[N + 2] yet. Now things will go\nhorribly wrong, DMA is going to access a unmapped/unreferenced memory\nregion, corrupted data will be transmited or iommu fault will be\ntriggered :(\n\nIn contrast, the for-loop that maps SKB fragments behaves perfectly\nas expected, and that is how the driver should do for both non-paged\ndata and paged frags actually.\n\nThis patch corrects DMA map/unmap sequences by fixing the array index\nfor tx_q->tx_skbuff_dma[entry].buf when assigning DMA buffer address.\n\nTested and verified on DWXGMAC CORE 3.20a" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c" |
| ], |
| "versions": [ |
| { |
| "version": "f748be531d7012c456b97f66091d86b3675c5fef", |
| "lessThan": "ece593fc9c00741b682869d3f3dc584d37b7c9df", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f748be531d7012c456b97f66091d86b3675c5fef", |
| "lessThan": "a3ff23f7c3f0e13f718900803e090fd3997d6bc9", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f748be531d7012c456b97f66091d86b3675c5fef", |
| "lessThan": "07c9c26e37542486e34d767505e842f48f29c3f6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f748be531d7012c456b97f66091d86b3675c5fef", |
| "lessThan": "58d23d835eb498336716cca55b5714191a309286", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "f748be531d7012c456b97f66091d86b3675c5fef", |
| "lessThan": "66600fac7a984dea4ae095411f644770b2561ede", |
| "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/stmicro/stmmac/stmmac_main.c" |
| ], |
| "versions": [ |
| { |
| "version": "4.7", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "4.7", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.171", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.1.116", |
| "lessThanOrEqual": "6.1.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.6.60", |
| "lessThanOrEqual": "6.6.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.11.7", |
| "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": "4.7", |
| "versionEndExcluding": "5.15.171" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.7", |
| "versionEndExcluding": "6.1.116" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.7", |
| "versionEndExcluding": "6.6.60" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.7", |
| "versionEndExcluding": "6.11.7" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.7", |
| "versionEndExcluding": "6.12" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/ece593fc9c00741b682869d3f3dc584d37b7c9df" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a3ff23f7c3f0e13f718900803e090fd3997d6bc9" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/07c9c26e37542486e34d767505e842f48f29c3f6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/58d23d835eb498336716cca55b5714191a309286" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/66600fac7a984dea4ae095411f644770b2561ede" |
| } |
| ], |
| "title": "net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2024-53058", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
