Fedora 25 update for kernel



| Updated: 2025-04-24
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-5897
CVE-2017-5986
CWE-ID CWE-125
CWE-617
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

kernel
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU5675

Risk: Medium

CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5897

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to obtain potentially sensitive information.

The vulnerability exists due to boundary error when processing GRE packets in ip6gre_err() function in net/ipv6/ip6_gre.c. A remote attacker can send specially crafted GRE packets to IPv6 interface, trigger out-of-bounds read and obtain memory contents or cause denial of service.

Successful exploitation of the vulnerability may allow an attacker to gain access to potentially sensitive information, stored in RAM, such as passwords, encryption keys, etc.


Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 25

kernel: before 4.9.9-200.fc25

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2017-fb89ca752a


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Assertion failure

EUVDB-ID: #VU5868

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-5986

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a local user to cause kernel panic.

The vulnerability exists due to a race condition in the sctp_wait_for_sndbuf() function in net/sctp/socket.c in the Linux kernel before 4.9.11. A local user can use userspace application to trigger a BUG_ON() system call if the socket tx buffer is full and cause kernel panic.

Successful exploitation of this vulnerability may result in denial of service condition.


Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 25

kernel: before 4.9.9-200.fc25

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2017-fb89ca752a


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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