fkie_cve-2021-46959
Vulnerability from fkie_nvd
Published
2024-02-29 23:15
Modified
2024-12-10 17:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
spi: Fix use-after-free with devm_spi_alloc_*
We can't rely on the contents of the devres list during
spi_unregister_controller(), as the list is already torn down at the
time we perform devres_find() for devm_spi_release_controller. This
causes devices registered with devm_spi_alloc_{master,slave}() to be
mistakenly identified as legacy, non-devm managed devices and have their
reference counters decremented below 0.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174
[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)
[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)
r4:b6700140
[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)
[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)
r5:b6700180 r4:b6700100
[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)
r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10
[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)
r5:b117ad94 r4:b163dc10
[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)
r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10
[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)
Instead, determine the devm allocation state as a flag on the
controller which is guaranteed to be stable during cleanup.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{ configurations: [ { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "B30F04D8-0BA7-4D9B-A893-2A53C8EC9B86", versionEndExcluding: "4.4.271", versionStartIncluding: "4.4.248", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "DD825021-F606-4423-B5D3-3C780356AAF1", versionEndExcluding: "4.9.271", versionStartIncluding: "4.9.248", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "BD177AC8-D485-4E8E-B332-C1D2547C42EF", versionEndExcluding: "4.14.233", versionStartIncluding: "4.14.212", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "182A108D-24D4-455D-946F-1FDBB03603A1", versionEndExcluding: "4.19.191", versionStartIncluding: "4.19.163", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "70F0C6AB-3B72-4F61-B482-4549E6B17950", versionEndExcluding: "5.4.119", versionStartIncluding: "5.4.80", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "4E433B72-3E3A-435E-9A66-80D28868BDF2", versionEndExcluding: "5.10.37", versionStartIncluding: "5.10", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "8CBB94EC-EC33-4464-99C5-03E5542715F0", versionEndExcluding: "5.11.21", versionStartIncluding: "5.11", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "D8C7052F-1B7B-4327-9C2B-84EBF3243838", versionEndExcluding: "5.12.4", versionStartIncluding: "5.12", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, ], cveTags: [], descriptions: [ { lang: "en", value: "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup.", }, { lang: "es", value: " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: corrige el Use-After-Free con devm_spi_alloc_* No podemos confiar en el contenido de la lista devres durante spi_unregister_controller(), ya que la lista ya está eliminada en ese momento. Realizamos devres_find() para devm_spi_release_controller. Esto hace que los dispositivos registrados con devm_spi_alloc_{master,slave}() se identifiquen erróneamente como dispositivos heredados, no administrados por devm y sus contadores de referencia disminuyan por debajo de 0. ------------[ cortar aquí ] ------------ ADVERTENCIA: CPU: 1 PID: 660 en lib/refcount.c:28 refcount_warn_saturate+0x108/0x174 [] (refcount_warn_saturate) de [] (kobject_put+ 0x90/0x98) [] (kobject_put) de [] (put_device+0x20/0x24) r4:b6700140 [] (put_device) de [] (devm_spi_release_controller+0x3c/0x40 ) [ ] (devm_spi_release_controller) de [] (release_nodes+0x84/0xc4) r5:b6700180 r4:b6700100 [] (release_nodes) de [] (devres_release_all+0x5c/0x6 0) r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10 [] (devres_release_all) de [] (__device_release_driver+0x144/0x1ec) r5:b117ad94 r4:b163dc10 [] (__device_release_driver) de [< b044f70c>] (device_driver_detach+0x84/0xa0) r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10 [] (device_driver_detach) de [ ] (unbind_store+0xe4/0xf8) en su lugar , determine el estado de asignación devm como un indicador en el controlador que se garantiza que será estable durante la limpieza.", }, ], id: "CVE-2021-46959", lastModified: "2024-12-10T17:55:18.607", metrics: { cvssMetricV31: [ { cvssData: { attackComplexity: "LOW", attackVector: "LOCAL", availabilityImpact: "HIGH", baseScore: 7.8, baseSeverity: "HIGH", confidentialityImpact: "HIGH", integrityImpact: "HIGH", privilegesRequired: "LOW", scope: "UNCHANGED", userInteraction: "NONE", vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", version: "3.1", }, exploitabilityScore: 1.8, impactScore: 5.9, source: "nvd@nist.gov", type: "Primary", }, ], }, published: "2024-02-29T23:15:07.230", references: [ { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7", }, ], sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", vulnStatus: "Analyzed", weaknesses: [ { description: [ { lang: "en", value: "CWE-416", }, ], source: "nvd@nist.gov", type: "Primary", }, ], }
Log in or create an account to share your comment.
Security Advisory comment format.
This schema specifies the format of a comment related to a security advisory.
Title of the comment
Description of the comment
Loading…
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.