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PT-2021-1515

🗓️ 19 Jul 2021 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity🔗 dbugs.ptsecurity.com👁 14 Views

Linux kernel fs/seq file overflow enables unprivileged root via >1GB path; upgrade to 5.13.4+

Related
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC		The vulnerability of the Linux operating system’s kernel, related to information disclosure through discrepancies, allows attackers to read a portion of the kernel’s memory.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the Nosy driver, a kernel driver for the Linux operating system, allows a hacker to increase their privileges.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the eBPF subsystem in the Linux operating system, related to reading beyond the buffer in memory, allows a hacker to execute arbitrary code in the kernel context.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the io_uring subsystem in the Linux operating system, related to writing beyond the buffer boundaries in memory, allows a hacker to execute arbitrary code.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the f2fs kernel module in the Linux operating system, related to reading beyond the buffer in memory, allows a hacker to cause a service failure.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the Linux operating system’s kernel, related to the exposure of information through inconsistencies, allows attackers to obtain confidential information.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the hci_sock_bound_ioctl() function in the HCI subsystem of the Linux operating system allows a attacker to execute arbitrary code in the kernel context.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability in the driver drivers/char/virtio_console.c of the Linux operating system allows a hacker to cause stack overflow.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability in the kernel/bpf/hashtab.c component of the Linux operating system, related to writing beyond buffer boundaries in memory, allows an attacker to compromise the integrity, accessibility, and confidentiality of data.
5 Oct 202100:00
–bdu_fstec
bdu_fstec
BDU FSTEC		The vulnerability of the Linux operating system’s kernel, related to insufficient checking of privilege assignment for critical resources, allows a hacker to trigger a service failure.
5 Oct 202100:00
–bdu_fstec
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02 Sep 2025 00:00Current
8.6High risk
Vulners AI Score8.6
CVSS 3.17.8 - 9.8
CVSS 210
CVSS 37.8 - 8.8
CVSS 48.7
EPSS0.98745
SSVC
linux kernelfilesystem sequence fileinteger overflowout of bounds writeunprivileged userroot escalationlong pathvulnerable versionsupdate 5.13.4
14