CVE-2026-23171

{"id": "CVE-2026-23171", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-02-14T16:15:57.353", "references": [{"url": "https://git.kernel.org/stable/c/bd25b092a06a3e05f7e8bd6da6fa7318777d8c3d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e9acda52fd2ee0cdca332f996da7a95c5fd25294", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: fix use-after-free due to enslave fail after slave array update\n\nFix a use-after-free which happens due to enslave failure after the new\nslave has been added to the array. Since the new slave can be used for Tx\nimmediately, we can use it after it has been freed by the enslave error\ncleanup path which frees the allocated slave memory. Slave update array is\nsupposed to be called last when further enslave failures are not expected.\nMove it after xdp setup to avoid any problems.\n\nIt is very easy to reproduce the problem with a simple xdp_pass prog:\n ip l add bond1 type bond mode balance-xor\n ip l set bond1 up\n ip l set dev bond1 xdp object xdp_pass.o sec xdp_pass\n ip l add dumdum type dummy\n\nThen run in parallel:\n while :; do ip l set dumdum master bond1 1>/dev/null 2>&1; done;\n mausezahn bond1 -a own -b rand -A rand -B 1.1.1.1 -c 0 -t tcp \"dp=1-1023, flags=syn\"\n\nThe crash happens almost immediately:\n [ 605.602850] Oops: general protection fault, probably for non-canonical address 0xe0e6fc2460000137: 0000 [#1] SMP KASAN NOPTI\n [ 605.602916] KASAN: maybe wild-memory-access in range [0x07380123000009b8-0x07380123000009bf]\n [ 605.602946] CPU: 0 UID: 0 PID: 2445 Comm: mausezahn Kdump: loaded Tainted: G B 6.19.0-rc6+ #21 PREEMPT(voluntary)\n [ 605.602979] Tainted: [B]=BAD_PAGE\n [ 605.602998] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n [ 605.603032] RIP: 0010:netdev_core_pick_tx+0xcd/0x210\n [ 605.603063] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 3e 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 30 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 25 01 00 00 49 8b 45 30 4c 89 e2 48 89 ee 48 89\n [ 605.603111] RSP: 0018:ffff88817b9af348 EFLAGS: 00010213\n [ 605.603145] RAX: dffffc0000000000 RBX: ffff88817d28b420 RCX: 0000000000000000\n [ 605.603172] RDX: 00e7002460000137 RSI: 0000000000000008 RDI: 07380123000009be\n [ 605.603199] RBP: ffff88817b541a00 R08: 0000000000000001 R09: fffffbfff3ed8c0c\n [ 605.603226] R10: ffffffff9f6c6067 R11: 0000000000000001 R12: 0000000000000000\n [ 605.603253] R13: 073801230000098e R14: ffff88817d28b448 R15: ffff88817b541a84\n [ 605.603286] FS: 00007f6570ef67c0(0000) GS:ffff888221dfa000(0000) knlGS:0000000000000000\n [ 605.603319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [ 605.603343] CR2: 00007f65712fae40 CR3: 000000011371b000 CR4: 0000000000350ef0\n [ 605.603373] Call Trace:\n [ 605.603392] <TASK>\n [ 605.603410] __dev_queue_xmit+0x448/0x32a0\n [ 605.603434] ? __pfx_vprintk_emit+0x10/0x10\n [ 605.603461] ? __pfx_vprintk_emit+0x10/0x10\n [ 605.603484] ? __pfx___dev_queue_xmit+0x10/0x10\n [ 605.603507] ? bond_start_xmit+0xbfb/0xc20 [bonding]\n [ 605.603546] ? _printk+0xcb/0x100\n [ 605.603566] ? __pfx__printk+0x10/0x10\n [ 605.603589] ? bond_start_xmit+0xbfb/0xc20 [bonding]\n [ 605.603627] ? add_taint+0x5e/0x70\n [ 605.603648] ? add_taint+0x2a/0x70\n [ 605.603670] ? end_report.cold+0x51/0x75\n [ 605.603693] ? bond_start_xmit+0xbfb/0xc20 [bonding]\n [ 605.603731] bond_start_xmit+0x623/0xc20 [bonding]"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbonding: corrige el uso despu\u00e9s de liberaci\u00f3n debido a un fallo de enslave despu\u00e9s de la actualizaci\u00f3n del array de esclavos\n\nCorrige un uso despu\u00e9s de liberaci\u00f3n que ocurre debido a un fallo de enslave despu\u00e9s de que el nuevo esclavo ha sido a\u00f1adido al array. Dado que el nuevo esclavo puede ser usado para Tx inmediatamente, podemos usarlo despu\u00e9s de que ha sido liberado por la ruta de limpieza de errores de enslave que libera la memoria del esclavo asignada. Se supone que la actualizaci\u00f3n del array de esclavos debe ser llamada al final cuando no se esperan m\u00e1s fallos de enslave. Mu\u00e9velo despu\u00e9s de la configuraci\u00f3n de xdp para evitar cualquier problema.\n\nEs muy f\u00e1cil reproducir el problema con un programa xdp_pass simple:\n ip l add bond1 type bond mode balance-xor\n ip l set bond1 up\n ip l set dev bond1 xdp object xdp_pass.o sec xdp_pass\n ip l add dumdum type dummy\n\nLuego ejecuta en paralelo:\n while :; do ip l set dumdum master bond1 1&gt;/dev/null 2&gt;&amp;1; done;\n mausezahn bond1 -a own -b rand -A rand -B 1.1.1.1 -c 0 -t tcp 'dp=1-1023, flags=syn'\n\nEl fallo ocurre casi inmediatamente:\n [ 605.602850] Oops: general protection fault, probably for non-canonical address 0xe0e6fc2460000137: 0000 [#1] SMP KASAN NOPTI\n [ 605.602916] KASAN: maybe wild-memory-access in range [0x07380123000009b8-0x07380123000009bf]\n [ 605.602946] CPU: 0 UID: 0 PID: 2445 Comm: mausezahn Kdump: loaded Tainted: G B 6.19.0-rc6+ #21 PREEMPT(voluntary)\n [ 605.602979] Tainted: [B]=BAD_PAGE\n [ 605.602998] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n [ 605.603032] RIP: 0010:netdev_core_pick_tx+0xcd/0x210\n [ 605.603063] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 3e 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 30 48 89 fa 48 c1 ea 03 &lt;80&gt; 3c 02 00 0f 85 25 01 00 00 49 8b 45 30 4c 89 e2 48 89 ee 48 89\n [ 605.603111] RSP: 0018:ffff88817b9af348 EFLAGS: 00010213\n [ 605.603145] RAX: dffffc0000000000 RBX: ffff88817d28b420 RCX: 0000000000000000\n [ 605.603172] RDX: 00e7002460000137 RSI: 0000000000000008 RDI: 07380123000009be\n [ 605.603199] RBP: ffff88817b541a00 R08: 0000000000000001 R09: fffffbfff3ed8c0c\n [ 605.603226] R10: ffffffff9f6c6067 R11: 0000000000000001 R12: 0000000000000000\n [ 605.603253] R13: 073801230000098e R14: ffff88817d28b448 R15: ffff88817b541a84\n [ 605.603286] FS: 00007f6570ef67c0(0000) GS:ffff888221dfa000(0000) knlGS:0000000000000000\n [ 605.603319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [ 605.603343] CR2: 00007f65712fae40 CR3: 000000011371b000 CR4: 0000000000350ef0\n [ 605.603373] Call Trace:\n [ 605.603392] \n [ 605.603410] __dev_queue_xmit+0x448/0x32a0\n [ 605.603434] ? __pfx_vprintk_emit+0x10/0x10\n [ 605.603461] ? __pfx_vprintk_emit+0x10/0x10\n [ 605.603484] ? __pfx___dev_queue_xmit+0x10/0x10\n [ 605.603507] ? bond_start_xmit+0xbfb/0xc20 [bonding]\n [ 605.603546] ? _printk+0xcb/0x100\n [ 605.603566] ? __pfx__printk+0x10/0x10\n [ 605.603589] ? bond_start_xmit+0xbfb/0xc20 [bonding]\n [ 605.603627] ? add_taint+0x5e/0x70\n [ 605.603648] ? add_taint+0x2a/0x70\n [ 605.603670] ? end_report.cold+0x51/0x75\n [ 605.603693] ? bond_start_xmit+0xbfb/0xc20 [bonding]\n [ 605.603731] bond_start_xmit+0x623/0xc20 [bonding]"}], "lastModified": "2026-04-03T14:16:25.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "031C7E01-871A-404A-8849-89C7AEC73CD6", "versionEndExcluding": "6.18.9", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EF854A1-ABB1-4E93-BE9A-44569EC76C0D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}