6.3

CVE-2023-52502

net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()

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

net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()

Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF.

Getting a reference on the socket found in a lookup while
holding a lock should happen before releasing the lock.

nfc_llcp_sock_get_sn() has a similar problem.

Finally nfc_llcp_recv_snl() needs to make sure the socket
found by nfc_llcp_sock_from_sn() does not disappear.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.6 < 4.19.297
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.259
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.199
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.136
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.59
Linux ≫ Linux Kernel Version >= 6.2 < 6.5.8
Linux ≫ Linux Kernel Version6.6 Updaterc1
Linux ≫ Linux Kernel Version6.6 Updaterc2
Linux ≫ Linux Kernel Version6.6 Updaterc3
Linux ≫ Linux Kernel Version6.6 Updaterc4
Linux ≫ Linux Kernel Version6.6 Updaterc5
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.069
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 6.3 1 5.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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/31c07dffafce914c1d1543c135382a11ff058d93
Patch
https://git.kernel.org/stable/c/6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9
Patch
https://git.kernel.org/stable/c/7adcf014bda16cdbf804af5c164d94d5d025db2d
Patch
https://git.kernel.org/stable/c/d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c
Patch
https://git.kernel.org/stable/c/d888d3f70b0de32b4f51534175f039ddab15eef8
Patch
https://git.kernel.org/stable/c/e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc
Patch
https://git.kernel.org/stable/c/e863f5720a5680e50c4cecf12424d7cc31b3eb0a
Patch