5.5

CVE-2026-31512

Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()

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

Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()

l2cap_ecred_data_rcv() reads the SDU length field from skb->data using
get_unaligned_le16() without first verifying that skb contains at least
L2CAP_SDULEN_SIZE (2) bytes. When skb->len is less than 2, this reads
past the valid data in the skb.

The ERTM reassembly path correctly calls pskb_may_pull() before reading
the SDU length (l2cap_reassemble_sdu, L2CAP_SAR_START case). Apply the
same validation to the Enhanced Credit Based Flow Control data path.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.14.1 < 5.10.253
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.168
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.131
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.80
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.21
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.11
Linux ≫ Linux Kernel Version 3.14 Update -
Linux ≫ Linux Kernel Version 7.0 Update rc1
Linux ≫ Linux Kernel Version 7.0 Update rc2
Linux ≫ Linux Kernel Version 7.0 Update rc3
Linux ≫ Linux Kernel Version 7.0 Update rc4
Linux ≫ Linux Kernel Version 7.0 Update rc5
Linux ≫ Linux Kernel Version 7.0 Update rc6
Linux ≫ Linux Kernel Version 7.0 Update rc7
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.024
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b
Patch
https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f
Patch
https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4
Patch
https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86
Patch
https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209
Patch
https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6
Patch
https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949
Patch
https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4
Patch