ghsa-5wgm-phpv-mgx7
Vulnerability from github
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.
{
"affected": [],
"aliases": [
"CVE-2022-48994"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T20:15:11Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: Fix function prototype mismatch in snd_seq_expand_var_event\n\nWith clang\u0027s kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),\nindirect call targets are validated against the expected function\npointer prototype to make sure the call target is valid to help mitigate\nROP attacks. 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\u0027s new -Wcast-function-type-strict\nflag, which is more sensitive than the simpler -Wcast-function-type,\nwhich only checks for type width mismatches.",
"id": "GHSA-5wgm-phpv-mgx7",
"modified": "2024-11-07T15:31:51Z",
"published": "2024-10-21T21:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48994"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/05530ef7cf7c7d700f6753f058999b1b5099a026"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13ee8fb5410b740c8dd2867d3557c7662f7dda2d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/15c42ab8d43acb73e2eba361ad05822c0af0ecfa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f46e95bf344abc4e74f8158901d32a869e0adb6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/63badfed200219ca656968725f1a43df293ac936"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b38486e82ecb9f3046e0184205f6b61408fc40c9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e385360705a0b346bdb57ce938249175d0613b8a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fccd454129f6a0739651f7f58307cdb631fd6e89"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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.