{ "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-2024-35855", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-35855", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-05-17T14:47:31.436Z", "updatedAt": "2026-08-05T11:30:19.765Z", "importedAt": "2026-10-24T01:57:11.582Z", "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": "mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update\n\nThe rule activity update delayed work periodically traverses the list of\nconfigured rules and queries their activity from the device.\n\nAs part of this task it accesses the entry pointed by 'ventry->entry',\nbut this entry can be changed concurrently by the rehash delayed work,\nleading to a use-after-free [1].\n\nFix by closing the race and perform the activity query under the\n'vregion->lock' mutex.\n\n[1]\nBUG: KASAN: slab-use-after-free in mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140\nRead of size 8 at addr ffff8881054ed808 by task kworker/0:18/181\n\nCPU: 0 PID: 181 Comm: kworker/0:18 Not tainted 6.9.0-rc2-custom-00781-gd5ab772d32f7 #2\nHardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019\nWorkqueue: mlxsw_core mlxsw_sp_acl_rule_activity_update_work\nCall Trace:\n \n dump_stack_lvl+0xc6/0x120\n print_report+0xce/0x670\n kasan_report+0xd7/0x110\n mlxsw_sp_acl_tcam_flower_rule_activity_get+0x121/0x140\n mlxsw_sp_acl_rule_activity_update_work+0x219/0x400\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n \n\nAllocated by task 1039:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x8f/0xa0\n __kmalloc+0x19c/0x360\n mlxsw_sp_acl_tcam_entry_create+0x7b/0x1f0\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x30d/0xb50\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30\n\nFreed by task 1039:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n poison_slab_object+0x102/0x170\n __kasan_slab_free+0x14/0x30\n kfree+0xc1/0x290\n mlxsw_sp_acl_tcam_vchunk_migrate_all+0x3d7/0xb50\n mlxsw_sp_acl_tcam_vregion_rehash_work+0x157/0x1300\n process_one_work+0x8eb/0x19b0\n worker_thread+0x6c9/0xf70\n kthread+0x2c9/0x3b0\n ret_from_fork+0x4d/0x80\n ret_from_fork_asm+0x1a/0x30", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "1b73f6e4ea770410a937a8db98f77e52594d23a0" }, { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "e24d2487424779c02760ff50cd9021b8676e19ef" }, { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "c17976b42d546ee118ca300db559630ee96fb758" }, { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "b996e8699da810e4c915841d6aaef761007f933a" }, { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "feabdac2057e863d0e140a2adf3d232eb4882db4" }, { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "b183b915beef818a25e3154d719ca015a1ae0770" }, { "version": "2bffc5322fd8679e879cd6370881ee50cf141ada", "status": "affected", "versionType": "git", "lessThan": "79b5b4b18bc85b19d3a518483f9abbbe6d7b3ba4" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.1" }, { "version": "5.4.275", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.216", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.158", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.90", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.30", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.8.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.8.*" }, { "version": "6.9", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }