CVE-2023-52531
wifi: iwlwifi: mvm: Fix a memory corruption issue
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: Fix a memory corruption issue
A few lines above, space is kzalloc()'ed for:
sizeof(struct iwl_nvm_data) +
sizeof(struct ieee80211_channel) +
sizeof(struct ieee80211_rate)
'mvm->nvm_data' is a 'struct iwl_nvm_data', so it is fine.
At the end of this structure, there is the 'channels' flex array.
Each element is of type 'struct ieee80211_channel'.
So only 1 element is allocated in this array.
When doing:
mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
We point at the first element of the 'channels' flex array.
So this is fine.
However, when doing:
mvm->nvm_data->bands[0].bitrates =
(void *)((u8 *)mvm->nvm_data->channels + 1);
because of the "(u8 *)" cast, we add only 1 to the address of the beginning
of the flex array.
It is likely that we want point at the 'struct ieee80211_rate' allocated
just after.
Remove the spurious casting so that the pointer arithmetic works as
expected.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-20 CVE Reserved
- 2024-03-02 CVE Published
- 2024-12-17 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
URL | Tag | Source |
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https://git.kernel.org/stable/c/8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.9 < 5.15.135 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.9 < 5.15.135" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.9 < 6.1.57 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.9 < 6.1.57" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.9 < 6.5.7 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.9 < 6.5.7" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.9 < 6.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.9 < 6.6" | en |
Affected
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