{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"Medium" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"kernel security update", "category":"general", "title":"Synopsis" }, { "text":"An update for kernel is now available for openEuler-20.03-LTS-SP4", "category":"general", "title":"Summary" }, { "text":"The Linux Kernel, the operating system core itself.\n\nSecurity Fix(es):\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Prefer NLA_NUL_STRING\n\nThese attributes are evaluated as c-string (passed to strcmp), but\nNLA_STRING doesn't check for the presence of a \\0 terminator.\n\nEither this needs to switch to nla_strcmp() and needs to adjust printf fmt\nspecifier to not use plain %s, or this needs to use NLA_NUL_STRING.\n\nAs the code has been this way for long time, it seems to me that userspace\ndoes include the terminating nul, even tough its not enforced so far, and\nthus NLA_NUL_STRING use is the simpler solution.(CVE-2026-63860)\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/edid: fix OOB read in drm_parse_tiled_block()\n\ndrm_parse_tiled_block() casts the DisplayID block to a\nstruct displayid_tiled_block and reads the full fixed layout up to\ntile->topology_id[7] without checking block->num_bytes. The DisplayID\niterator only validates the declared payload length, so a crafted EDID\ncan advertise a tiled-display block (tag DATA_BLOCK_TILED_DISPLAY, or\nDATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY for v2.0) with a small num_bytes at\nthe end of a DisplayID extension. The read then runs past the end of the\nexact-sized kmemdup()'d EDID allocation, a heap out-of-bounds read.\n\nReject blocks shorter than the spec's 22-byte tiled payload before\nreading the fixed struct, as drm_parse_vesa_mso_data() already does.\n\n BUG: KASAN: slab-out-of-bounds in drm_edid_connector_update\n Read of size 2 at addr ffff888010077700 by task exploit/147\n dump_stack_lvl (lib/dump_stack.c:94 ...)\n print_report (mm/kasan/report.c:378 ...)\n kasan_report (mm/kasan/report.c:595)\n drm_edid_connector_update (drivers/gpu/drm/drm_edid.c:7581)\n bochs_connector_helper_get_modes (drivers/gpu/drm/tiny/bochs.c:574)\n drm_helper_probe_single_connector_modes (drivers/gpu/drm/drm_probe_helper.c:426)\n status_store (drivers/gpu/drm/drm_sysfs.c:219)\n ...\n vfs_write (fs/read_write.c:595 fs/read_write.c:688)\n ksys_write (fs/read_write.c:740)(CVE-2026-64546)", "category":"general", "title":"Description" }, { "text":"An update for kernel is now available for openEuler-20.03-LTS-SP4/openEuler-22.03-LTS-SP3/openEuler-24.03-LTS/openEuler-24.03-LTS-SP2.\n\nopenEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.", "category":"general", "title":"Topic" }, { "text":"Medium", "category":"general", "title":"Severity" }, { "text":"kernel", "category":"general", "title":"Affected Component" } ], "publisher":{ "issuing_authority":"openEuler security committee", "name":"openEuler", "namespace":"https://www.openeuler.org", "contact_details":"openeuler-security@openeuler.org", "category":"vendor" }, "references":[ { "summary":"openEuler-SA-2026-3452", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3452" }, { "summary":"CVE-2026-63860", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-63860&packageName=kernel" }, { "summary":"CVE-2026-64546", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-64546&packageName=kernel" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63860" }, { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64546" }, { "summary":"openEuler-SA-2026-3452 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-3452.json" } ], "title":"An update for kernel is now available for openEuler-20.03-LTS-SP4", "tracking":{ "initial_release_date":"2026-08-26T11:02:31+08:00", "revision_history":[ { "date":"2026-08-26T11:02:31+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-08-26T11:02:31+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-08-26T11:02:31+08:00", "id":"openEuler-SA-2026-3452", "version":"1.0.0", "status":"final" } }, "product_tree":{ "branches":[ { 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the full fixed layout up to\ntile->topology_id[7] without checking block->num_bytes. The DisplayID\niterator only validates the declared payload length, so a crafted EDID\ncan advertise a tiled-display block (tag DATA_BLOCK_TILED_DISPLAY, or\nDATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY for v2.0) with a small num_bytes at\nthe end of a DisplayID extension. The read then runs past the end of the\nexact-sized kmemdup()'d EDID allocation, a heap out-of-bounds read.\n\nReject blocks shorter than the spec's 22-byte tiled payload before\nreading the fixed struct, as drm_parse_vesa_mso_data() already does.\n\n BUG: KASAN: slab-out-of-bounds in drm_edid_connector_update\n Read of size 2 at addr ffff888010077700 by task exploit/147\n dump_stack_lvl (lib/dump_stack.c:94 ...)\n print_report (mm/kasan/report.c:378 ...)\n kasan_report (mm/kasan/report.c:595)\n drm_edid_connector_update (drivers/gpu/drm/drm_edid.c:7581)\n bochs_connector_helper_get_modes (drivers/gpu/drm/tiny/bochs.c:574)\n drm_helper_probe_single_connector_modes (drivers/gpu/drm/drm_probe_helper.c:426)\n status_store (drivers/gpu/drm/drm_sysfs.c:219)\n ...\n vfs_write (fs/read_write.c:595 fs/read_write.c:688)\n ksys_write (fs/read_write.c:740)", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ 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"openEuler-20.03-LTS-SP4:perf-4.19.90-2608.4.0.0386.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:perf-debuginfo-4.19.90-2608.4.0.0386.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python2-perf-4.19.90-2608.4.0.0386.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python2-perf-debuginfo-4.19.90-2608.4.0.0386.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python3-perf-4.19.90-2608.4.0.0386.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python3-perf-debuginfo-4.19.90-2608.4.0.0386.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2608.4.0.0386.oe2003sp4.src" ], "details":"kernel security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3452" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"MEDIUM", "baseScore":5.5, "vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2608.4.0.0386.oe2003sp4.aarch64", 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