CVE-2024-46745
"Linux uinput Rejection of Unreasonable Slots Vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: Input: uinput - reject requests with unreasonable number of slots When exercising uinput interface syzkaller may try setting up device with a really large number of slots, which causes memory allocation failure in input_mt_init_slots(). While this allocation failure is handled properly and request is rejected, it results in syzkaller reports. Additionally, such request may put undue burden on the system which will try to free a lot of memory for a bogus request. Fix it by limiting allowed number of slots to 100. This can easily be extended if we see devices that can track more than 100 contacts.
INFO
Published Date :
Sept. 18, 2024, 8:15 a.m.
Last Modified :
Sept. 20, 2024, 12:30 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 18, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: Input: uinput - reject requests with unreasonable number of slots When exercising uinput interface syzkaller may try setting up device with a really large number of slots, which causes memory allocation failure in input_mt_init_slots(). While this allocation failure is handled properly and request is rejected, it results in syzkaller reports. Additionally, such request may put undue burden on the system which will try to free a lot of memory for a bogus request. Fix it by limiting allowed number of slots to 100. This can easily be extended if we see devices that can track more than 100 contacts. Added Reference kernel.org https://git.kernel.org/stable/c/9c6d189f0c1c59ba9a32326ec82a0b367a3cd47b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/597ff930296c4c8fc6b6a536884d4f1a7187ec70 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/51fa08edd80003db700bdaa099385c5900d27f4b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9719687398dea8a6a12a10321a54dd75eec7ab2d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/61df76619e270a46fd427fbdeb670ad491c42de2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a4858b00a1ec57043697fb935565fe267f161833 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d76fc0f0b18d49b7e721c9e4975ef4bffde2f3e7 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/206f533a0a7c683982af473079c4111f4a0f9f5e [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-46745 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-46745
weaknesses.