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libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.
23 affected packages
expat, apache2, apr-util, cmake, ghostscript...
| Package | 20.04 LTS |
|---|---|
| expat | Needs evaluation |
| apache2 | Not affected |
| apr-util | Not affected |
| cmake | Not affected |
| ghostscript | Not affected |
| texlive-bin | Not affected |
| xmlrpc-c | Needs evaluation |
| vnc4 | — |
| wbxml2 | Needs evaluation |
| swish-e | Needs evaluation |
| insighttoolkit4 | Needs evaluation |
| cadaver | Needs evaluation |
| gdcm | Not affected |
| ayttm | — |
| cableswig | — |
| coin3 | Not affected |
| matanza | Ignored |
| tdom | Needs evaluation |
| vtk | — |
| smart | — |
| firefox | — |
| thunderbird | — |
| libxmltok | Needs evaluation |
In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.
23 affected packages
expat, apache2, apr-util, cmake, ghostscript...
| Package | 20.04 LTS |
|---|---|
| expat | Needs evaluation |
| apache2 | Not affected |
| apr-util | Not affected |
| cmake | Not affected |
| ghostscript | Not affected |
| texlive-bin | Not affected |
| xmlrpc-c | Needs evaluation |
| vnc4 | — |
| wbxml2 | Needs evaluation |
| swish-e | Needs evaluation |
| insighttoolkit4 | Needs evaluation |
| cadaver | Needs evaluation |
| gdcm | Not affected |
| ayttm | — |
| cableswig | — |
| coin3 | Not affected |
| matanza | Ignored |
| tdom | Needs evaluation |
| vtk | — |
| smart | — |
| firefox | — |
| thunderbird | — |
| libxmltok | Needs evaluation |
Pcapng file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
H.245 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
BUSMASTER file parser abnormal exit in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
Kerberos protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
Bluetooth HFP Profile protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
Bluetooth BR/EDR FHS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |
CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
1 affected package
wireshark
| Package | 20.04 LTS |
|---|---|
| wireshark | Needs evaluation |