{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-53058", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-53058", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-11-19T17:19:40.912Z", "updatedAt": "2026-08-05T11:43:21.929Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "f748be531d7012c456b97f66091d86b3675c5fef", "status": "affected", "versionType": "git", "lessThan": "ece593fc9c00741b682869d3f3dc584d37b7c9df" }, { "version": "f748be531d7012c456b97f66091d86b3675c5fef", "status": "affected", "versionType": "git", "lessThan": "a3ff23f7c3f0e13f718900803e090fd3997d6bc9" }, { "version": "f748be531d7012c456b97f66091d86b3675c5fef", "status": "affected", "versionType": "git", "lessThan": "07c9c26e37542486e34d767505e842f48f29c3f6" }, { "version": "f748be531d7012c456b97f66091d86b3675c5fef", "status": "affected", "versionType": "git", "lessThan": "58d23d835eb498336716cca55b5714191a309286" }, { "version": "f748be531d7012c456b97f66091d86b3675c5fef", "status": "affected", "versionType": "git", "lessThan": "66600fac7a984dea4ae095411f644770b2561ede" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.7", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.7" }, { "version": "5.15.171", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.116", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.60", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.11.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.11.*" }, { "version": "6.12", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }