7.8

CVE-2022-49029

hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails

Smatch report warning as follows:

drivers/hwmon/ibmpex.c:509 ibmpex_register_bmc() warn:
  '&data->list' not removed from list

If ibmpex_find_sensors() fails in ibmpex_register_bmc(), data will
be freed, but data->list will not be removed from driver_data.bmc_data,
then list traversal may cause UAF.

Fix by removeing it from driver_data.bmc_data before free().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.24 < 4.9.335
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.301
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.268
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.226
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.158
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.82
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.12
Linux ≫ Linux Kernel Version6.1 Updaterc1
Linux ≫ Linux Kernel Version6.1 Updaterc2
Linux ≫ Linux Kernel Version6.1 Updaterc3
Linux ≫ Linux Kernel Version6.1 Updaterc4
Linux ≫ Linux Kernel Version6.1 Updaterc5
Linux ≫ Linux Kernel Version6.1 Updaterc6
Linux ≫ Linux Kernel Version6.1 Updaterc7
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.154
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/24b9633f7db7f4809be7053df1d2e117e7c2de10
Patch
https://git.kernel.org/stable/c/45f6e81863747c0d7bc6a95ec51129900e71467a
Patch
https://git.kernel.org/stable/c/798198273bf86673b970b51acdb35e57f42b3fcb
Patch
https://git.kernel.org/stable/c/7b2b67fe1339389e0bf3c37c7a677a004ac0e4e3
Patch
https://git.kernel.org/stable/c/90907cd4d11351ff76c9a447bcb5db0e264c47cd
Patch
https://git.kernel.org/stable/c/e2a87785aab0dac190ac89be6a9ba955e2c634f2
Patch
https://git.kernel.org/stable/c/e65cfd1f9cd27d9c27ee5cb88128a9f79f25d863
Patch
https://git.kernel.org/stable/c/f2a13196ad41c6c2ab058279dffe6c97292e753a
Patch