mbox series

[scarthgap,0/7] libpcap: backport seven CVE fixes from 1.10.7

Message ID 20260915194520.45847-1-jaipaul.cheernam@est.tech
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Series libpcap: backport seven CVE fixes from 1.10.7 | expand

Message

Jaipaul Cheernam Sept. 15, 2026, 7:45 p.m. UTC 
This series backports the seven security fixes that were released in
libpcap 1.10.7 to the 1.10.4 recipe.

The same set of fixes has already been addressed on master by upgrading
libpcap to 1.10.7.

CVEs addressed (see the upstream 1.10.7 CHANGES):

  CVE-2026-0799  - Access M[] safely in the BPF interpreter.
  CVE-2026-31912 - Mind the program bounds in pcap_offline_filter().
  CVE-2026-31911 - Fail opcodes safely in the BPF interpreter.
  CVE-2026-6244  - Avoid division by zero via pcap_offline_filter().
  CVE-2026-6554  - Limit "ja L" looping in pcap_offline_filter().
  CVE-2026-18313 - Fix a memory leak in rpcapd.
  CVE-2026-18238 - Fix RPCAP_MSG_PACKET validation.

Each CVE is a separate file:// patch, ordered so they apply on top of each
other. Where a fix touches the BPF filter interpreter it is translated to
the 1.10.4 pcap_filter naming (the pcapint_* rename is newer), and
prerequisites that are not part of these CVEs (the pcap_filter refactor's
neighbouring changes, the "bogus" -> "invalid" rewording, the low-snaplen
fixes) were dropped. The pcap-haiku.c hunk does not apply since 1.10.4's
Haiku module does not yet call the filter. The upstream CHANGES/changelog
hunk is not backported. Patches note the relevant adjustments.

Verified by applying all seven patches in order onto a pristine libpcap
1.10.4 tree and building successfully, including with --enable-remote
(rpcapd).

Jaipaul Cheernam (7):
  libpcap: Fix CVE-2026-0799
  libpcap: Fix CVE-2026-31912
  libpcap: Fix CVE-2026-31911
  libpcap: Fix CVE-2026-6244
  libpcap: Fix CVE-2026-6554
  libpcap: Fix CVE-2026-18313
  libpcap: Fix CVE-2026-18238

 .../libpcap/libpcap/01-CVE-2026-0799.patch    |  64 +++
 .../libpcap/libpcap/02-CVE-2026-31912.patch   | 520 ++++++++++++++++++
 .../libpcap/libpcap/03-CVE-2026-31911.patch   |  42 ++
 .../libpcap/libpcap/04-CVE-2026-6244.patch    |  46 ++
 .../libpcap/libpcap/05-CVE-2026-6554.patch    |  87 +++
 .../libpcap/libpcap/06-CVE-2026-18313.patch   |  81 +++
 .../libpcap/libpcap/07-CVE-2026-18238.patch   | 219 ++++++++
 .../libpcap/libpcap_1.10.4.bb                 |   7 +
 8 files changed, 1066 insertions(+)
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/01-CVE-2026-0799.patch
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/02-CVE-2026-31912.patch
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/03-CVE-2026-31911.patch
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/04-CVE-2026-6244.patch
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/05-CVE-2026-6554.patch
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/06-CVE-2026-18313.patch
 create mode 100644 meta/recipes-connectivity/libpcap/libpcap/07-CVE-2026-18238.patch