netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Linux | Linux | affected |
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Configuration 1 [-]
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No data.
No data available yet.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4178-1 | linux security update |
Debian DLA |
DLA-4193-1 | linux-6.1 security update |
Debian DSA |
DSA-5907-1 | linux security update |
EUVD |
EUVD-2025-11235 | In the Linux kernel, the following vulnerability has been resolved: netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets When calling netlbl_conn_setattr(), addr->sa_family is used to determine the function behavior. If sk is an IPv4 socket, but the connect function is called with an IPv6 address, the function calipso_sock_setattr() is triggered. Inside this function, the following code is executed: sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL; Since sk is an IPv4 socket, pinet6 is NULL, leading to a null pointer dereference. This patch fixes the issue by checking if inet6_sk(sk) returns a NULL pointer before accessing pinet6. |
Ubuntu USN |
USN-7585-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7585-2 | Linux kernel (FIPS) vulnerabilities |
Ubuntu USN |
USN-7585-3 | Linux kernel (FIPS) vulnerabilities |
Ubuntu USN |
USN-7585-4 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-7585-5 | Linux kernel (HWE) vulnerabilities |
Ubuntu USN |
USN-7585-6 | Linux kernel (BlueField) vulnerabilities |
Ubuntu USN |
USN-7585-7 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-7591-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7591-2 | Linux kernel (FIPS) vulnerabilities |
Ubuntu USN |
USN-7591-3 | Linux kernel (Real-time) vulnerabilities |
Ubuntu USN |
USN-7591-4 | Linux kernel (AWS) vulnerabilities |
Ubuntu USN |
USN-7591-5 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-7591-6 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-7592-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7593-1 | Linux kernel (HWE) vulnerabilities |
Ubuntu USN |
USN-7594-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7594-2 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-7594-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7597-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-7597-2 | Linux kernel (Azure FIPS) vulnerabilities |
Ubuntu USN |
USN-7598-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-7602-1 | Linux kernel (Xilinx ZynqMP) vulnerabilities |
Ubuntu USN |
USN-7605-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7605-2 | Linux kernel (Low Latency) vulnerabilities |
Ubuntu USN |
USN-7606-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-7628-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-7640-1 | Linux kernel (IoT) vulnerabilities |
Ubuntu USN |
USN-7655-1 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-7835-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7835-2 | Linux kernel (Real-time) vulnerabilities |
Ubuntu USN |
USN-7835-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7835-4 | Linux kernel (HWE) vulnerabilities |
Ubuntu USN |
USN-7835-5 | Linux kernel (Oracle) vulnerabilities |
Ubuntu USN |
USN-7835-6 | Linux kernel (AWS) vulnerabilities |
Ubuntu USN |
USN-7887-1 | Linux kernel (Raspberry Pi Real-time) vulnerabilities |
Ubuntu USN |
USN-7887-2 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-7940-1 | Linux kernel (Azure FIPS) vulnerabilities |
Ubuntu USN |
USN-7940-2 | Linux kernel (Azure, N-Series) vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.304% probability within 30 days)
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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| Weaknesses | CWE-476 |
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threat_severity
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cvssV3_1
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| Description | In the Linux kernel, the following vulnerability has been resolved: netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets When calling netlbl_conn_setattr(), addr->sa_family is used to determine the function behavior. If sk is an IPv4 socket, but the connect function is called with an IPv6 address, the function calipso_sock_setattr() is triggered. Inside this function, the following code is executed: sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL; Since sk is an IPv4 socket, pinet6 is NULL, leading to a null pointer dereference. This patch fixes the issue by checking if inet6_sk(sk) returns a NULL pointer before accessing pinet6. | |
| Title | netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets | |
| References |
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