CVE-2026-31972
CriticalSummary
Podatność w SAMtools związana jest z poleceniem `mpileup`, które może zbyt wcześnie usuwać dane referencyjne, co prowadzi do próby odczytu z wskaźnika do zwolnionej pamięci. Może to skutkować wyciekiem informacji o stanie programu oraz awarią programu z powodu dostępu do nieprawidłowej pamięci.
Risk Assessment
Dla organizacji ryzyko polega na możliwości wycieku wrażliwych informacji oraz potencjalnych awarii aplikacji, co może zakłócić procesy analizy danych bioinformatycznych.
Recommendation
Zaleca się aktualizację do wersji 1.21.1 lub 1.22, aby usunąć tę podatność, ponieważ nie ma dostępnych obejść dla tego problemu.
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Original NVD description (English source)
SAMtools is a program for reading, manipulating and writing bioinformatics file formats. The `mpileup` command outputs DNA sequences that have been aligned against a known reference. On each output line it writes the reference position, optionally the reference DNA base at that position (obtained from a separate file) and all of the DNA bases that aligned to that position. As the output is ordered by position, reference data that is no longer needed is discarded once it has been printed out. Under certain conditions the data could be discarded too early, leading to an attempt to read from a pointer to freed memory. This bug may allow information about program state to be leaked. It may also cause a program crash through an attempt to access invalid memory. This bug is fixed in versions 1.21.1 and 1.22. There is no workaround for this issue.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

