The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attac

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• arista eos4.20.1fx-virtual-router
• canonical ubuntu linux12.04
• canonical ubuntu linux14.04
• debian debian linux7.0
• debian debian linux8.0
• f5 arx6.2.0 and later · up to 6.4.0 inclusive
• linux linux kernel4.5 and later · before 4.9.36
• linux linux kernel4.10 and later · before 4.11
• linux linux kernel3.11 and later · before 3.16.54
• linux linux kernel3.2 and later · before 3.2.99
• linux linux kernel3.17 and later · before 3.18.60
• linux linux kernel3.3 and later · before 3.10.108
• linux linux kernel3.19 and later · before 4.1.43
• linux linux kernel4.2 and later · before 4.4.76
• openstack cloud magnum orchestration7
• opensuse leap42.3
• redhat enterprise linux desktop6.0
• redhat enterprise linux desktop7.0
• redhat enterprise linux eus7.3
• redhat enterprise linux eus7.4

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now
• CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
  83Now
• CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
  77This week
• CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
  77This week
• CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV
  77This week

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.