Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation

Affected versions

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

• linux linux kernel6.3.9 and later · before 6.6.10
• linux linux kernel5.10.198 and later · before 5.10.206
• linux linux kernel5.15.118 and later · before 5.15.146
• linux linux kernel6.1.35 and later · before 6.1.71
• redhat codeready linux builder9.0
• redhat codeready linux builder for eus9.2
• redhat codeready linux builder for eus9.4
• redhat codeready linux builder for eus9.6
• redhat codeready linux builder for ibm z systems9.0_s390x
• redhat codeready linux builder for ibm z systems eus9.2_s390x
• redhat codeready linux builder for ibm z systems eus9.4_s390x
• redhat codeready linux builder for ibm z systems eus9.6_s390x
• redhat codeready linux builder for power little endian9.0_ppc64le
• redhat codeready linux builder for power little endian eus9.2
• redhat codeready linux builder for power little endian eus9.4_ppc64le
• redhat codeready linux builder for power little endian eus9.6_ppc64le
• redhat enterprise linux9.0
• redhat enterprise linux9.2
• redhat enterprise linux for arm 649.0_aarch64
• redhat enterprise linux for arm 649.4_aarch64

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

• git.kernel.org/pub/scm/linux/kernel kernel

  • all versionsaffected

• Red Hat Red Hat Enterprise Linux 6

  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 7

  • all versionsunknown
  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 8

  • all versionsunknown
  • all versionsunknown

• Red Hat Red Hat Enterprise Linux 9

  • 0:5.14.0-362.24.1.el9_3 and laternot affected · rpm
  • 0:5.14.0-362.24.1.el9_3 and laternot affected · rpm
  • all versionsaffected

• Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

  • 0:5.14.0-70.105.1.el9_0 and laternot affected · rpm
  • 0:5.14.0-70.105.1.rt21.177.el9_0 and laternot affected · rpm

• Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support

  • 0:5.14.0-284.55.1.el9_2 and laternot affected · rpm
  • 0:5.14.0-284.55.1.rt14.340.el9_2 and laternot affected · rpm

• Red Hat RHOL-5.8-RHEL-9

  • v5.8.6-22 and laternot affected · rpm
  • v5.8.6-11 and laternot affected · rpm
  • v6.8.1-407 and laternot affected · rpm
  • v5.8.6-19 and laternot affected · rpm
  • v1.0.0-479 and laternot affected · rpm
  • v5.8.6-7 and laternot affected · rpm
  • v0.4.0-247 and laternot affected · rpm
  • v5.8.6-5 and laternot affected · rpm
  • v1.1.0-227 and laternot affected · rpm
  • v5.8.1-470 and laternot affected · rpm

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

Published before and after this one in the same product

• ← EarlierCVE-2023-7042Dec 21, 2023 · Kernel: null pointer dereference in ath10k_wmi_tlv_op_pull_mgmt_tx_compl_ev()
  22Monitor
• ← EarlierCVE-2023-49328Dec 25, 2023 · On a Wolters Kluwer B.POINT 23.70.00 server running Linux on premises, during the authentication phase, a validated system user can achieve
  28Monitor
• Later →CVE-2023-7192Jan 2, 2024 · Kernel: refcount leak in ctnetlink_create_conntrack()
  17Monitor

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.