CVE-2024-53097

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The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\n\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0: dump_backtrace+0xfc/0x17c\nswapper/0: show_stack+0x18/0x28\nswapper/0: dump_stack_lvl+0x40/0xa0\nswapper/0: print_report+0x1b8/0x71c\nswapper/0: kasan_report+0xec/0x14c\nswapper/0: __do_kernel_fault+0x60/0x29c\nswapper/0: do_bad_area+0x30/0xdc\nswapper/0: do_tag_check_fault+0x20/0x34\nswapper/0: do_mem_abort+0x58/0x104\nswapper/0: el1_abort+0x3c/0x5c\nswapper/0: el1h_64_sync_handler+0x80/0xcc\nswapper/0: el1h_64_sync+0x68/0x6c\nswapper/0: __memset+0x84/0x188\nswapper/0: btf_populate_kfunc_set+0x280/0x3d8\nswapper/0: __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0: register_btf_kfunc_id_set+0x48/0x60\nswapper/0: register_nf_nat_bpf+0x1c/0x40\nswapper/0: nf_nat_init+0xc0/0x128\nswapper/0: do_one_initcall+0x184/0x464\nswapper/0: do_initcall_level+0xdc/0x1b0\nswapper/0: do_initcalls+0x70/0xc0\nswapper/0: do_basic_setup+0x1c/0x28\nswapper/0: kernel_init_freeable+0x144/0x1b8\nswapper/0: kernel_init+0x20/0x1a8\nswapper/0: ret_from_fork+0x10/0x20\n=================================================================="}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slab_common.c"], "versions": [{"version": "c383263ee82a01a5a9bc1a466025ccde39a38cae", "lessThan": "8ebee7565effdeae6085458f8f8463363120a871", "status": "affected", "versionType": "git"}, {"version": "a543785856249a5ba8c20468098601c0c33b1224", "lessThan": "d02492863023431c31f85d570f718433c22b9311", "status": "affected", "versionType": "git"}, {"version": "44f79667fefd52945a44d2a57a2cd3c554d7f4e0", "lessThan": "d43f1430d47c22a0727c05b6f156ed25fecdfeb4", "status": "affected", "versionType": "git"}, {"version": "f8767d10bcbc2529540eb906906c0058e15cd918", "lessThan": "486aeb5f1855c75dd810c25036134961bd2a6722", "status": "affected", "versionType": "git"}, {"version": "e3a9fc1520a6606c6121aca8d6679c6b93de7fd8", "lessThan": "71548fada7ee0eb50cc6ccda82dff010c745f92c", "status": "affected", "versionType": "git"}, {"version": "3e9a65a38706866bf93e19f5b4936465188add10", "lessThan": "3dfb40da84f26dd35dd9bbaf626a2424565b8406", "status": "affected", "versionType": "git"}, {"version": "1a83a716ec233990e1fd5b6fbb1200ade63bf450", "lessThan": "704573851b51808b45dae2d62059d1d8189138a2", "status": "affected", "versionType": "git"}, {"version": "73388659ef0eea51747350530afdeadf8809ce9c", "status": 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"https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4"}, {"url": "https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722"}, {"url": "https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c"}, {"url": "https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406"}, {"url": "https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2"}], "title": "mm: krealloc: Fix MTE false alarm in __do_krealloc", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-53097", "role": "CISA Coordinator", 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The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\n\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0: dump_backtrace+0xfc/0x17c\nswapper/0: show_stack+0x18/0x28\nswapper/0: dump_stack_lvl+0x40/0xa0\nswapper/0: print_report+0x1b8/0x71c\nswapper/0: kasan_report+0xec/0x14c\nswapper/0: __do_kernel_fault+0x60/0x29c\nswapper/0: do_bad_area+0x30/0xdc\nswapper/0: do_tag_check_fault+0x20/0x34\nswapper/0: do_mem_abort+0x58/0x104\nswapper/0: el1_abort+0x3c/0x5c\nswapper/0: el1h_64_sync_handler+0x80/0xcc\nswapper/0: el1h_64_sync+0x68/0x6c\nswapper/0: __memset+0x84/0x188\nswapper/0: btf_populate_kfunc_set+0x280/0x3d8\nswapper/0: __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0: register_btf_kfunc_id_set+0x48/0x60\nswapper/0: register_nf_nat_bpf+0x1c/0x40\nswapper/0: nf_nat_init+0xc0/0x128\nswapper/0: do_one_initcall+0x184/0x464\nswapper/0: do_initcall_level+0xdc/0x1b0\nswapper/0: do_initcalls+0x70/0xc0\nswapper/0: do_basic_setup+0x1c/0x28\nswapper/0: kernel_init_freeable+0x144/0x1b8\nswapper/0: kernel_init+0x20/0x1a8\nswapper/0: ret_from_fork+0x10/0x20\n=================================================================="}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.230", "versionStartIncluding": "5.10.227"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.173", "versionStartIncluding": "5.15.168"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.118", "versionStartIncluding": "6.1.113"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.62", "versionStartIncluding": "6.6.55"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.9", "versionStartIncluding": "6.11.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.10.14"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T13:00:20.163Z"}}}, "cveMetadata": {"cveId": "CVE-2024-53097", "state": "PUBLISHED", "dateUpdated": "2025-11-03T22:29:11.139Z", "dateReserved": "2024-11-19T17:17:24.983Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-11-25T21:21:26.549Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/slab_common.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8ebee7565effdeae6085458f8f8463363120a871", "status": "affected", "version": "c383263ee82a01a5a9bc1a466025ccde39a38cae", "versionType": "git"}, {"lessThan": "d02492863023431c31f85d570f718433c22b9311", "status": "affected", "version": "a543785856249a5ba8c20468098601c0c33b1224", "versionType": "git"}, {"lessThan": "d43f1430d47c22a0727c05b6f156ed25fecdfeb4", "status": "affected", "version": "44f79667fefd52945a44d2a57a2cd3c554d7f4e0", "versionType": "git"}, {"lessThan": "486aeb5f1855c75dd810c25036134961bd2a6722", "status": "affected", "version": "f8767d10bcbc2529540eb906906c0058e15cd918", "versionType": "git"}, {"lessThan": "71548fada7ee0eb50cc6ccda82dff010c745f92c", "status": "affected", "version": "e3a9fc1520a6606c6121aca8d6679c6b93de7fd8", "versionType": "git"}, {"lessThan": "3dfb40da84f26dd35dd9bbaf626a2424565b8406", "status": "affected", "version": "3e9a65a38706866bf93e19f5b4936465188add10", "versionType": "git"}, {"lessThan": "704573851b51808b45dae2d62059d1d8189138a2", "status": "affected", "version": "1a83a716ec233990e1fd5b6fbb1200ade63bf450", "versionType": "git"}, {"status": "affected", "version": "73388659ef0eea51747350530afdeadf8809ce9c", "versionType": "git"}, {"lessThan": "6.11", "status": "affected", "version": "6.10.14", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/slab_common.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5.10.230", "status": "affected", "version": "5.10.227", "versionType": "semver"}, {"lessThan": "5.15.173", "status": "affected", "version": "5.15.168", "versionType": "semver"}, {"lessThan": "6.1.118", "status": "affected", "version": "6.1.113", "versionType": "semver"}, {"lessThan": "6.6.62", "status": "affected", "version": "6.6.55", "versionType": "semver"}, {"lessThan": "6.11.9", "status": "affected", "version": "6.11.3", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3546841B-07B8-4997-A4AD-1EC788256AF0", "versionEndExcluding": "5.10.230", "versionStartIncluding": "5.10.227", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B3C4D92D-9E65-4C21-AF70-5AC493F239EF", "versionEndExcluding": "5.15.173", "versionStartIncluding": "5.15.168", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7C53F2A0-0C57-484C-9CE8-EC3EC63EC52B", "versionEndExcluding": "6.1.118", "versionStartIncluding": "6.1.113", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C41517DE-EF01-4A67-961A-7BA6F46D422A", "versionEndExcluding": "6.6.62", "versionStartIncluding": "6.6.55", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DFC4E34A-A453-4E5B-B4B8-A80AC8442771", "versionEndExcluding": "6.11.9", "versionStartIncluding": "6.11.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.10.14:*:*:*:*:*:*:*", "matchCriteriaId": "512B17C9-99F8-4C34-965E-0E2384EEB665", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: krealloc: Fix MTE false alarm in __do_krealloc\n\nThis patch addresses an issue introduced by commit 1a83a716ec233 (\"mm:\nkrealloc: consider spare memory for __GFP_ZERO\") which causes MTE\n(Memory Tagging Extension) to falsely report a slab-out-of-bounds error.\n\nThe problem occurs when zeroing out spare memory in __do_krealloc. The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\n\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0: dump_backtrace+0xfc/0x17c\nswapper/0: show_stack+0x18/0x28\nswapper/0: dump_stack_lvl+0x40/0xa0\nswapper/0: print_report+0x1b8/0x71c\nswapper/0: kasan_report+0xec/0x14c\nswapper/0: __do_kernel_fault+0x60/0x29c\nswapper/0: do_bad_area+0x30/0xdc\nswapper/0: do_tag_check_fault+0x20/0x34\nswapper/0: do_mem_abort+0x58/0x104\nswapper/0: el1_abort+0x3c/0x5c\nswapper/0: el1h_64_sync_handler+0x80/0xcc\nswapper/0: el1h_64_sync+0x68/0x6c\nswapper/0: __memset+0x84/0x188\nswapper/0: btf_populate_kfunc_set+0x280/0x3d8\nswapper/0: __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0: register_btf_kfunc_id_set+0x48/0x60\nswapper/0: register_nf_nat_bpf+0x1c/0x40\nswapper/0: nf_nat_init+0xc0/0x128\nswapper/0: do_one_initcall+0x184/0x464\nswapper/0: do_initcall_level+0xdc/0x1b0\nswapper/0: do_initcalls+0x70/0xc0\nswapper/0: do_basic_setup+0x1c/0x28\nswapper/0: kernel_init_freeable+0x144/0x1b8\nswapper/0: kernel_init+0x20/0x1a8\nswapper/0: ret_from_fork+0x10/0x20\n=================================================================="}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: krealloc: corrige la falsa alarma de MTE en __do_krealloc Este parche soluciona un problema introducido por el commit 1a83a716ec233 (\"mm: krealloc: considere la memoria de repuesto para __GFP_ZERO\") que hace que MTE (extensi\u00f3n de etiquetado de memoria) informe falsamente un error de losa fuera de los l\u00edmites. El problema ocurre al poner a cero la memoria de repuesto en __do_krealloc. El c\u00f3digo original solo consideraba KASAN basado en software y no ten\u00eda en cuenta MTE. No restablece la etiqueta KASAN antes de llamar a memset, lo que lleva a una falta de coincidencia entre la etiqueta del puntero y la etiqueta de memoria, lo que resulta en un falso positivo. Ejemplo del error: ================================================================== swapper/0: ERROR: KASAN: slab fuera de los l\u00edmites en __memset+0x84/0x188 swapper/0: Escritura en la direcci\u00f3n f4ffff8005f0fdf0 por la tarea swapper/0/1 swapper/0: Etiqueta de puntero: [f4], etiqueta de memoria: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 No contaminado 6.12. swapper/0: Nombre del hardware: MT6991(ENG) (DT) swapper/0: Rastreo de llamadas: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c intercambiador/0: el1h_64_sync_handler+0x80/0xcc intercambiador/0: el1h_64_sync+0x68/0x6c intercambiador/0: __memset+0x84/0x188 intercambiador/0: btf_populate_kfunc_set+0x280/0x3d8 intercambiador/0: __register_btf_kfunc_id_set+0x43c/0x468 intercambiador/0: register_btf_kfunc_id_set+0x48/0x60 intercambiador/0: register_nf_nat_bpf+0x1c/0x40 intercambiador/0: nf_nat_init+0xc0/0x128 intercambiador/0: do_one_initcall+0x184/0x464 intercambiador/0: do_initcall_level+0xdc/0x1b0 intercambiador/0: do_initcalls+0x70/0xc0 intercambiador/0: do_basic_setup+0x1c/0x28 intercambiador/0: kernel_init_freeable+0x144/0x1b8 intercambiador/0: kernel_init+0x20/0x1a8 intercambiador/0: ret_from_fork+0x10/0x20 ===================================================================="}], "id": "CVE-2024-53097", "lastModified": "2026-06-17T08:08:16.100", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-53097", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T20:11:14.602710Z", "version": "2.0.3"}}]}, "published": "2024-11-25T22:15:15.763", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:6966", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}, {"advisory": "RHSA-2025:6966", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "kernel: mm: krealloc: Fix MTE false alarm in __do_krealloc", "id": "2328792", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2328792"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-119", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm: krealloc: Fix MTE false alarm in __do_krealloc\nThis patch addresses an issue introduced by commit 1a83a716ec233 (\"mm:\nkrealloc: consider spare memory for __GFP_ZERO\") which causes MTE\n(Memory Tagging Extension) to falsely report a slab-out-of-bounds error.\nThe problem occurs when zeroing out spare memory in __do_krealloc. The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0: dump_backtrace+0xfc/0x17c\nswapper/0: show_stack+0x18/0x28\nswapper/0: dump_stack_lvl+0x40/0xa0\nswapper/0: print_report+0x1b8/0x71c\nswapper/0: kasan_report+0xec/0x14c\nswapper/0: __do_kernel_fault+0x60/0x29c\nswapper/0: do_bad_area+0x30/0xdc\nswapper/0: do_tag_check_fault+0x20/0x34\nswapper/0: do_mem_abort+0x58/0x104\nswapper/0: el1_abort+0x3c/0x5c\nswapper/0: el1h_64_sync_handler+0x80/0xcc\nswapper/0: el1h_64_sync+0x68/0x6c\nswapper/0: __memset+0x84/0x188\nswapper/0: btf_populate_kfunc_set+0x280/0x3d8\nswapper/0: __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0: register_btf_kfunc_id_set+0x48/0x60\nswapper/0: register_nf_nat_bpf+0x1c/0x40\nswapper/0: nf_nat_init+0xc0/0x128\nswapper/0: do_one_initcall+0x184/0x464\nswapper/0: do_initcall_level+0xdc/0x1b0\nswapper/0: do_initcalls+0x70/0xc0\nswapper/0: do_basic_setup+0x1c/0x28\nswapper/0: kernel_init_freeable+0x144/0x1b8\nswapper/0: kernel_init+0x20/0x1a8\nswapper/0: ret_from_fork+0x10/0x20\n=================================================================="], "name": "CVE-2024-53097", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-11-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-53097\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-53097\nhttps://lore.kernel.org/linux-cve-announce/2024112505-CVE-2024-53097-cd93@gregkh/T"], "threat_severity": "Low"}

{}