Linux Kernel up to 6.7.1 on Jakub include/linux/slab.h netlbl_calipso_add_pass memory leak

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.7.1 on Jakub. It has been declared as critical. Affected by this vulnerability is the function netlbl_calipso_add_pass in the library include/linux/slab.h. Executing a manipulation can lead to memory leak. This vulnerability is tracked as CVE-2023-52698. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.7.1 on Jakub. It has been declared as critical. This vulnerability affects the function netlbl_calipso_add_pass in the library include/linux/slab.h. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: calipso: fix memory leak in netlbl_calipso_add_pass() If IPv6 support is disabled at boot (ipv6.disable=1), the calipso_init() -> netlbl_calipso_ops_register() function isn't called, and the netlbl_calipso_ops_get() function always returns NULL. In this case, the netlbl_calipso_add_pass() function allocates memory for the doi_def variable but doesn't free it with the calipso_doi_free(). BUG: memory leak unreferenced object 0xffff888011d68180 (size 64): comm "syz-executor.1", pid 10746, jiffies 4295410986 (age 17.928s) hex dump (first 32 bytes): 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmalloc include/linux/slab.h:552 [inline] [] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [inline] [] netlbl_calipso_add+0x22e/0x4f0 net/netlabel/netlabel_calipso.c:111 [] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739 [] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] [] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800 [] netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2515 [] genl_rcv+0x29/0x40 net/netlink/genetlink.c:811 [] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] [] netlink_unicast+0x54b/0x800 net/netlink/af_netlink.c:1339 [] netlink_sendmsg+0x90a/0xdf0 net/netlink/af_netlink.c:1934 [] sock_sendmsg_nosec net/socket.c:651 [inline] [] sock_sendmsg+0x157/0x190 net/socket.c:671 [] ____sys_sendmsg+0x712/0x870 net/socket.c:2342 [] ___sys_sendmsg+0xf8/0x170 net/socket.c:2396 [] __sys_sendmsg+0xea/0x1b0 net/socket.c:2429 [] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 [] entry_SYSCALL_64_after_hwframe+0x61/0xc6 Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller [PM: merged via the LSM tree at Jakub Kicinski request]

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2023-52698 since 03/07/2024. The exploitation appears to be difficult. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 210815 (RHEL 9 : kernel (RHSA-2024:9315)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14 or 6.7.2 eliminates this vulnerability. Applying the patch 9a8f811a146a/36e19f84634a/44a88650ba55/a4529a08d370/321b3a5592c8/408bbd1e1746/f14d36e6e97f/ec4e9d630a64 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (210815) and CERT Bund (WID-SEC-2024-1188). Once again VulDB remains the best source for vulnerability data.

Affected

• Google Container-Optimized OS
• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• IBM InfoSphere Guardium
• Oracle Linux
• Oracle VM
• NetApp FAS
• EMC Avamar
• IBM SAN Volume Controller
• Dell NetWorker
• IBM FlashSystem
• IBM Security Guardium
• RESF Rocky Linux
• Broadcom Brocade SANnav
• Open Source Linux Kernel
• IBM Business Automation Workflow
• IBM Spectrum Protect Plus
• IBM QRadar SIEM
• Dell Avamar
• Juniper Junos Space
• IBM DB2
• IBM Storage Scale System
• SolarWinds Security Event Manager

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.19.305
• 5.4.267
• 5.10.208
• 5.15.147
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.1.22
• 6.1.23
• 6.1.24
• 6.1.25
• 6.1.26
• 6.1.27
• 6.1.28
• 6.1.29
• 6.1.30
• 6.1.31
• 6.1.32
• 6.1.33
• 6.1.34
• 6.1.35
• 6.1.36
• 6.1.37
• 6.1.38
• 6.1.39
• 6.1.40
• 6.1.41
• 6.1.42
• 6.1.43
• 6.1.44
• 6.1.45
• 6.1.46
• 6.1.47
• 6.1.48
• 6.1.49
• 6.1.50
• 6.1.51
• 6.1.52
• 6.1.53
• 6.1.54
• 6.1.55
• 6.1.56
• 6.1.57
• 6.1.58
• 6.1.59
• 6.1.60
• 6.1.61
• 6.1.62
• 6.1.63
• 6.1.64
• 6.1.65
• 6.1.66
• 6.1.67
• 6.1.68
• 6.1.69
• 6.1.70
• 6.1.71
• 6.1.72
• 6.1.73
• 6.1.74
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.7.0
• 6.7.1

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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