Linux Kernel up to 6.19.13 af_alg_pull_tsgl infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.19.13. It has been rated as critical. Affected is the function af_alg_pull_tsgl. Performing a manipulation results in infinite loop. This vulnerability is known as CVE-2026-43078. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.19.13. This affects the function af_alg_pull_tsgl. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl When page reassignment was added to af_alg_pull_tsgl the original loop wasn't updated so it may try to reassign one more page than necessary. Add the check to the reassignment so that this does not happen. Also update the comment which still refers to the obsolete offset argument.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-43078 since 05/01/2026. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 314331 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50262)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.254, 5.15.204, 6.1.170, 6.6.137, 6.12.85, 6.18.24 or 6.19.14 eliminates this vulnerability. Applying the patch fa48d3ea9cdbfb28c1fd6756c6c5cd01351aa51e/2b781d1d4f933990318bcc5c68fb75a717379e42/f7826bc0b39928a4a22f6b815dd9940b22a63503/710a4ce5d7afd9fe082c75dec282ab4a11c0fe71/c8369a6d62f5abde9cbd4b62c45bf4b996be2468/dea5fcf085f977b6c2de1b2d4ec4767b6c840d1f/9532501e0f1b200ea80baa0e33e0b06da10bb271/31d00156e50ecad37f2cb6cbf04aaa9a260505ef is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (314331) and CERT Bund (WID-SEC-2026-1385). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Microsoft Azure Linux

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Linux): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 314331
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2026-50262)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.254/5.15.204/6.1.170/6.6.137/6.12.85/6.18.24/6.19.14
Patch: fa48d3ea9cdbfb28c1fd6756c6c5cd01351aa51e/2b781d1d4f933990318bcc5c68fb75a717379e42/f7826bc0b39928a4a22f6b815dd9940b22a63503/710a4ce5d7afd9fe082c75dec282ab4a11c0fe71/c8369a6d62f5abde9cbd4b62c45bf4b996be2468/dea5fcf085f977b6c2de1b2d4ec4767b6c840d1f/9532501e0f1b200ea80baa0e33e0b06da10bb271/31d00156e50ecad37f2cb6cbf04aaa9a260505ef

Timelineinfo

05/01/2026 CVE reserved
05/06/2026 +5 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
06/08/2026 +33 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43078 (🔒)
GCVE (CVE): GCVE-0-2026-43078
GCVE (VulDB): GCVE-100-361305
CERT Bund: WID-SEC-2026-1385 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/06/2026 11:51
Updated: 06/08/2026 14:51
Changes: 05/06/2026 11:51 (58), 05/07/2026 03:06 (7), 05/13/2026 22:01 (2), 05/21/2026 01:54 (11), 06/08/2026 14:51 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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