Security Vulnerabilities
In the Linux kernel, the following vulnerability has been resolved:
x86/sev: Use TSC_FACTOR for Secure TSC frequency calculation
When using Secure TSC, the GUEST_TSC_FREQ MSR reports a frequency based on
the nominal P0 frequency, which deviates slightly (typically ~0.2%) from
the actual mean TSC frequency due to clocking parameters.
Over extended VM uptime, this discrepancy accumulates, causing clock skew
between the hypervisor and a SEV-SNP VM, leading to early timer interrupts as
perceived by the guest.
The guest kernel relies on the reported nominal frequency for TSC-based
timekeeping, while the actual frequency set during SNP_LAUNCH_START may
differ. This mismatch results in inaccurate time calculations, causing the
guest to perceive hrtimers as firing earlier than expected.
Utilize the TSC_FACTOR from the SEV firmware's secrets page (see "Secrets
Page Format" in the SNP Firmware ABI Specification) to calculate the mean
TSC frequency, ensuring accurate timekeeping and mitigating clock skew in
SEV-SNP VMs.
Use early_ioremap_encrypted() to map the secrets page as
ioremap_encrypted() uses kmalloc() which is not available during early TSC
initialization and causes a panic.
[ bp: Drop the silly dummy var:
https://lore.kernel.org/r/20250630192726.GBaGLlHl84xIopx4Pt@fat_crate.local ]
CVSS Score
5.5
EPSS Score
0.0
Published
2025-08-16
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: reject VHT opmode for unsupported channel widths
VHT operating mode notifications are not defined for channel widths
below 20 MHz. In particular, 5 MHz and 10 MHz are not valid under the
VHT specification and must be rejected.
Without this check, malformed notifications using these widths may
reach ieee80211_chan_width_to_rx_bw(), leading to a WARN_ON due to
invalid input. This issue was reported by syzbot.
Reject these unsupported widths early in sta_link_apply_parameters()
when opmode_notif is used. The accepted set includes 20, 40, 80, 160,
and 80+80 MHz, which are valid for VHT. While 320 MHz is not defined
for VHT, it is allowed to avoid rejecting HE or EHT clients that may
still send a VHT opmode notification.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-08-16
Claude Code is an agentic coding tool. Prior to version 1.0.4, it's possible to bypass the Claude Code confirmation prompts to read a file and then send file contents over the network without user confirmation due to an overly broad allowlist of safe commands. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically after release. Current users of Claude Code are unaffected, as versions prior to 1.0.24 are deprecated and have been forced to update.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-08-16
A vulnerability was found in Buttercup buttercup-browser-extension up to 0.14.2. Affected by this vulnerability is an unknown functionality of the component Vault Handler. The manipulation results in improper access controls. The attack may be performed from a remote location. A high complexity level is associated with this attack. The exploitation appears to be difficult. The exploit has been made public and could be used. Upgrading to version 1.0.1 addresses this issue. The patch is identified as 89. Upgrading the affected component is recommended. This vulnerability only affects products that are no longer supported by the maintainer.
CVSS Score
3.1
EPSS Score
0.0
Published
2025-08-16
HCL BigFix SaaS Authentication Service is affected by a SQL injection vulnerability. The vulnerability allows potential attackers to manipulate SQL queries.
CVSS Score
4.3
EPSS Score
0.001
Published
2025-08-15
HCL BigFix SaaS Authentication Service is affected by a sensitive information disclosure. Under certain conditions, error messages disclose sensitive version information about the underlying platform.
CVSS Score
5.3
EPSS Score
0.0
Published
2025-08-15
HCL BigFix SaaS Authentication Service is affected by a Cross-Site Scripting (XSS) vulnerability. The image upload functionality inadequately validated the submitted image format.
CVSS Score
4.3
EPSS Score
0.001
Published
2025-08-15
HCL BigFix SaaS Authentication Service is vulnerable to cache poisoning. The BigFix SaaS's HTTP responses were observed to include the Origin header. Its presence alongside an unvalidated reflection of the Origin header value introduces a potential for cache poisoning.
CVSS Score
5.3
EPSS Score
0.0
Published
2025-08-15
This issue was addressed with improved checks. This issue is fixed in Apple Music Classical 2.3 for Android. An app may be able to unexpectedly leak a user's credentials.
CVSS Score
6.2
EPSS Score
0.0
Published
2025-08-15
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Authenticator Login allows Authentication Bypass.This issue affects Authenticator Login: from 0.0.0 before 2.1.4.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-15