Linux · Ubuntu · Top 20

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - OCFS2 file system; - SCTP protocol; (CVE-2026-53043, …

Ubuntu CVE-2026-53043CVE-2026-53224CVE-2026-53225CVE-2026-53246CVE-2026-53309 CVSS 9.8 2026-09-04 17:55 UTC · 2026-09-04 14:55 -03

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - NVIDIA Tegra memory controller driver; - File systems…

Ubuntu CVE-2022-50401CVE-2026-43071CVE-2026-52914CVE-2026-53002CVE-2026-53043CVE-2026-53045CVE-2026-53224CVE-2026-53309 CVSS 9.8 2026-09-04 17:51 UTC · 2026-09-04 14:51 -03

It was discovered that the rabbitmq-c command-line tools only accepted credentials on the command line, making them visible to other local users through the process list. An attacker could possibly use this to obtain sensitive credentials.…

Ubuntu CVE-2023-35789CVE-2026-44235CVE-2026-44236CVE-2026-59986CVE-2026-61547 CVSS 5.5 2026-09-03 15:51 UTC · 2026-09-03 12:51 -03

It was discovered that GnuPG incorrectly validated authentication tag lengths when parsing CMS messages encrypted with AES-GCM. An attacker could possibly use this issue to bypass message integrity checks.

Ubuntu 2026-09-03 12:55 UTC · 2026-09-03 09:55 -03

It was discovered that SPICE vdagent had an integer overflow in the buffer size calculation used when writing to the daemon socket. A malicious or compromised SPICE host could possibly use this issue to cause SPICE vdagent to crash, result…

Ubuntu CVE-2026-57965CVE-2026-57966 CVSS 5.1 2026-09-03 12:43 UTC · 2026-09-03 09:43 -03

It was discovered that libssh2 incorrectly handled certain SFTP server responses. A remote attacker controlling an SSH server could use this issue to cause libssh2 to crash or possibly execute arbitrary code. (CVE-2026-66032) It was disco…

Ubuntu CVE-2026-66032CVE-2026-66033CVE-2026-66035 CVSS 8.8 2026-09-03 12:37 UTC · 2026-09-03 09:37 -03

It was discovered that APR-util incorrectly performed password hash comparisons in a way that was not constant-time. An attacker could possibly use this issue to obtain sensitive information. (CVE-2025-49506) It was discovered that APR-ut…

Ubuntu CVE-2025-49506CVE-2026-32327CVE-2026-34501CVE-2026-34502 CVSS 9.1 2026-09-03 12:35 UTC · 2026-09-03 09:35 -03

It was discovered that OpenSSH's ssh-agent incorrectly handled interactions between agent locking and the session-bind@openssh.com extension. A remote attacker with access to a forwarded agent connection could possibly use this issue to pe…

Ubuntu CVE-2026-73281CVE-2026-73282CVE-2026-73283 CVSS 4.8 2026-09-03 12:30 UTC · 2026-09-03 09:30 -03

It was discovered that SSSD did not properly validate authentication token lengths when processing PAM responder requests. A local attacker could possibly use this issue to cause SSSD to crash, resulting in a denial of service.

Ubuntu 2026-09-03 12:00 UTC · 2026-09-03 09:00 -03

It was discovered that FFmpeg incorrectly handled certain crafted media files in the VobSub subtitle demuxer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-64830) It was discov…

Ubuntu CVE-2026-64830CVE-2026-64833CVE-2026-64834CVE-2026-64835CVE-2026-65703CVE-2026-65704CVE-2026-65705CVE-2026-65706CVE-2026-75141CVE-2026-75142CVE-2026-75143CVE-2026-75144CVE-2026-75146 CVSS 9.8 2026-09-03 11:06 UTC · 2026-09-03 08:06 -03

It was discovered that Apache Tika's ISA-Tab parser incorrectly handled file path resolution. An attacker who could place files in a directory that Tika subsequently parses could use this issue to read arbitrary files accessible to the Ti…

Ubuntu 2026-09-03 10:59 UTC · 2026-09-03 07:59 -03

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate att…

Ubuntu CVE-2020-24588CVE-2025-27558CVE-2026-31414CVE-2026-31448CVE-2026-31705CVE-2026-43198CVE-2026-43378CVE-2026-43499CVE-2026-46266CVE-2026-46331CVE-2026-52924CVE-2026-52989CVE-2026-53086CVE-2026-53176CVE-2026-53212CVE-2026-53215CVE-2026-53224CVE-2026-53225CVE-2026-53228CVE-2026-53246CVE-2026-53359CVE-2026-64531 CVSS 9.8 2026-09-02 21:40 UTC · 2026-09-02 18:40 -03

Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate att…

Ubuntu CVE-2020-24588CVE-2025-27558CVE-2021-47378CVE-2026-23392CVE-2026-31405CVE-2026-31414CVE-2026-31448CVE-2026-31657CVE-2026-31668CVE-2026-43071CVE-2026-43198CVE-2026-43493CVE-2026-43499CVE-2026-46266CVE-2026-46331CVE-2026-52914CVE-2026-52924CVE-2026-52931CVE-2026-52955CVE-2026-52958CVE-2026-52982CVE-2026-52986CVE-2026-52989CVE-2026-52993CVE-2026-52999CVE-2026-53002CVE-2026-53006CVE-2026-53043CVE-2026-53045CVE-2026-53088CVE-2026-53176CVE-2026-53212CVE-2026-53224CVE-2026-53225CVE-2026-53228CVE-2026-53246CVE-2026-53309CVE-2026-53359 CVSS 9.8 2026-09-02 21:37 UTC · 2026-09-02 18:37 -03

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - OCFS2 file system; - SCTP protocol; (CVE-2026-53043, …

Ubuntu CVE-2026-53043CVE-2026-53224CVE-2026-53225CVE-2026-53246CVE-2026-53309 CVSS 9.8 2026-09-02 21:30 UTC · 2026-09-02 18:30 -03

Mark Bereza and Lilith Wyatt discovered that BioSig incorrectly handled certain crafted input files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-22891, CVE-2026-20777)

Ubuntu CVE-2026-22891CVE-2026-20777 CVSS 9.8 2026-09-02 14:04 UTC · 2026-09-02 11:04 -03

It was discovered that pyasn1 did not properly bound the size of long-form tag identifiers when parsing BER, CER, or DER encoded data. An attacker could possibly use this issue to cause applications decoding untrusted ASN.1 data to consume…

Ubuntu CVE-2026-59884CVE-2026-59885CVE-2026-59886 CVSS 7.5 2026-09-01 16:20 UTC · 2026-09-01 13:20 -03

It was discovered that Libgcrypt had a timing-based side-channel flaw in its RSA implementation. A remote attacker could possibly use this issue to obtain sensitive information.

Ubuntu 2026-09-01 16:14 UTC · 2026-09-01 13:14 -03

USN-8688-1 fixed a vulnerability in PAM. This update provides the corresponding fix for PAM on Ubuntu 26.04 LTS. Original advisory details: Juthawong Naisanguansee discovered that PAM incorrectly cleared failed login attempt records wh…

Ubuntu 2026-09-01 15:43 UTC · 2026-09-01 12:43 -03

USN-8555-1 fixed vulnerabilities in Ubuntu Advantage Tools. On Ubuntu 14.04 LTS only, it was discovered that some machines were unable to enable esm-infra-legacy due to a preemptive apt-helper check. This update fixes the problem. We apol…

Ubuntu CVE-2026-9494CVE-2026-11386CVE-2026-12391 CVSS 9.0 2026-09-01 15:32 UTC · 2026-09-01 12:32 -03

Alexis Challande discovered that libevent incorrectly handled certain empty output buffers. An attacker could possibly use this issue to trigger a use-after-free, resulting in a denial of service or arbitrary code execution. This issue onl…

Ubuntu CVE-2026-63381CVE-2026-63382CVE-2026-63383CVE-2026-63384CVE-2026-63385 CVSS 9.2 2026-09-01 15:27 UTC · 2026-09-01 12:27 -03