CVE-2022-48994

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Fix function prototype mismatch in snd_seq_expand_var_event With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. seq_copy_in_user() and seq_copy_in_kernel() did not have prototypes matching snd_seq_dump_func_t. Adjust this and remove the casts. There are not resulting binary output differences. This was found as a result of Clang's new -Wcast-function-type-strict flag, which is more sensitive than the simpler -Wcast-function-type, which only checks for type width mismatches.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/05530ef7cf7c7d700f6753f058999b1b5099a026	Patch
https://git.kernel.org/stable/c/13ee8fb5410b740c8dd2867d3557c7662f7dda2d	Patch
https://git.kernel.org/stable/c/15c42ab8d43acb73e2eba361ad05822c0af0ecfa	Patch
https://git.kernel.org/stable/c/2f46e95bf344abc4e74f8158901d32a869e0adb6	Patch
https://git.kernel.org/stable/c/63badfed200219ca656968725f1a43df293ac936	Patch
https://git.kernel.org/stable/c/b38486e82ecb9f3046e0184205f6b61408fc40c9	Patch
https://git.kernel.org/stable/c/e385360705a0b346bdb57ce938249175d0613b8a	Patch
https://git.kernel.org/stable/c/fccd454129f6a0739651f7f58307cdb631fd6e89	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc6::::::

History

07 Nov 2024, 13:52

Type	Values Removed	Values Added
CWE		NVD-CWE-noinfo
References	~~() https://git.kernel.org/stable/c/05530ef7cf7c7d700f6753f058999b1b5099a026 -~~	() https://git.kernel.org/stable/c/05530ef7cf7c7d700f6753f058999b1b5099a026 - Patch
References	~~() https://git.kernel.org/stable/c/13ee8fb5410b740c8dd2867d3557c7662f7dda2d -~~	() https://git.kernel.org/stable/c/13ee8fb5410b740c8dd2867d3557c7662f7dda2d - Patch
References	~~() https://git.kernel.org/stable/c/15c42ab8d43acb73e2eba361ad05822c0af0ecfa -~~	() https://git.kernel.org/stable/c/15c42ab8d43acb73e2eba361ad05822c0af0ecfa - Patch
References	~~() https://git.kernel.org/stable/c/2f46e95bf344abc4e74f8158901d32a869e0adb6 -~~	() https://git.kernel.org/stable/c/2f46e95bf344abc4e74f8158901d32a869e0adb6 - Patch
References	~~() https://git.kernel.org/stable/c/63badfed200219ca656968725f1a43df293ac936 -~~	() https://git.kernel.org/stable/c/63badfed200219ca656968725f1a43df293ac936 - Patch
References	~~() https://git.kernel.org/stable/c/b38486e82ecb9f3046e0184205f6b61408fc40c9 -~~	() https://git.kernel.org/stable/c/b38486e82ecb9f3046e0184205f6b61408fc40c9 - Patch
References	~~() https://git.kernel.org/stable/c/e385360705a0b346bdb57ce938249175d0613b8a -~~	() https://git.kernel.org/stable/c/e385360705a0b346bdb57ce938249175d0613b8a - Patch
References	~~() https://git.kernel.org/stable/c/fccd454129f6a0739651f7f58307cdb631fd6e89 -~~	() https://git.kernel.org/stable/c/fccd454129f6a0739651f7f58307cdb631fd6e89 - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:o:linux:linux_kernel:6.1:rc5:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc2:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc4:::::: cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.1:rc1:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc3:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc6::::::
First Time		Linux linux Kernel Linux

23 Oct 2024, 15:13

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: seq: Fix function prototipo desajuste en snd_seq_expand_var_event Con la integridad del flujo de control del kernel de clang (kCFI, CONFIG_CFI_CLANG), los objetivos de llamada indirecta se validan contra el prototipo de puntero de función esperado para asegurarse de que el objetivo de llamada sea válido para ayudar a mitigar los ataques ROP. Si no son idénticos, hay un error en el tiempo de ejecución, que se manifiesta como un pánico del kernel o la muerte del hilo. seq_copy_in_user() y seq_copy_in_kernel() no tenían prototipos que coincidieran con snd_seq_dump_func_t. Ajústelo y elimine las conversiones. No hay diferencias de salida binaria resultantes. Esto se encontró como resultado del nuevo indicador -Wcast-function-type-strict de Clang, que es más sensible que el más simple -Wcast-function-type, que solo verifica los desajustes de ancho de tipo.

21 Oct 2024, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-10-21 20:15

Updated : 2024-11-07 13:52

NVD link : CVE-2022-48994

Mitre link : CVE-2022-48994

CVE.ORG link : CVE-2022-48994

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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If they are not identical, there is a failure at run time,\nwhich manifests as either a kernel panic or thread getting killed.\n\nseq_copy_in_user() and seq_copy_in_kernel() did not have prototypes\nmatching snd_seq_dump_func_t. Adjust this and remove the casts. There\nare not resulting binary output differences.\n\nThis was found as a result of Clang's new -Wcast-function-type-strict\nflag, which is more sensitive than the simpler -Wcast-function-type,\nwhich only checks for type width mismatches."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: seq: Fix function prototipo desajuste en snd_seq_expand_var_event Con la integridad del flujo de control del kernel de clang (kCFI, CONFIG_CFI_CLANG), los objetivos de llamada indirecta se validan contra el prototipo de puntero de funci\u00f3n esperado para asegurarse de que el objetivo de llamada sea v\u00e1lido para ayudar a mitigar los ataques ROP. Si no son id\u00e9nticos, hay un error en el tiempo de ejecuci\u00f3n, que se manifiesta como un p\u00e1nico del kernel o la muerte del hilo. seq_copy_in_user() y seq_copy_in_kernel() no ten\u00edan prototipos que coincidieran con snd_seq_dump_func_t. Aj\u00fastelo y elimine las conversiones. No hay diferencias de salida binaria resultantes. Esto se encontr\u00f3 como resultado del nuevo indicador -Wcast-function-type-strict de Clang, que es m\u00e1s sensible que el m\u00e1s simple -Wcast-function-type, que solo verifica los desajustes de ancho de tipo."}], "lastModified": "2024-11-07T13:52:43.380", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "99B9ECF9-423E-4A61-B103-DB964B227DA5", "versionEndExcluding": "4.9.336"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FB3E1F82-01A3-456E-9C83-D567B9A75815", "versionEndExcluding": "4.14.302", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1185B8E3-712E-4BFB-BD01-78D47F7EF1F2", "versionEndExcluding": "4.19.269", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C752145-904B-474A-A7F2-E9F29353B0FE", "versionEndExcluding": "5.4.227", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7318B597-DFFD-4BBC-A947-539D6E30D82A", "versionEndExcluding": "5.10.159", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90897BD1-104D-4CFF-94F5-29F9041217FB", "versionEndExcluding": "5.15.83", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "389392A7-81C4-4C26-884B-8C7CF0F53DA4", "versionEndExcluding": "6.0.13", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}

5.5 /10