CVE-2024-35871
published 2024-05-19CVE-2024-35871: In the Linux kernel, the following vulnerability has been resolved: riscv: process: Fix kernel gp leakage childregs represents the registers which are active…
PriorityP433high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.26%
18.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
riscv: process: Fix kernel gp leakage
childregs represents the registers which are active for the new thread
in user context. For a kernel thread, childregs->gp is never used since
the kernel gp is not touched by switch_to. For a user mode helper, the
gp value can be observed in user space after execve or possibly by other
means.
[From the email thread]
The /* Kernel thread */ comment is somewhat inaccurate in that it is also used
for user_mode_helper threads, which exec a user process, e.g. /sbin/init or
when /proc/sys/kernel/core_pattern is a pipe. Such threads do not have
PF_KTHREAD set and are valid targets for ptrace etc. even before they exec.
childregs is the *user* context during syscall execution and it is observable
from userspace in at least five ways:
1. kernel_execve does not currently clear integer registers, so the starting
register state for PID 1 and other user processes started by the kernel has
sp = user stack, gp = kernel __global_pointer$, all other integer registers
zeroed by the memset in the patch comment.
This is a bug in its own right, but I'm unwilling to bet that it is the only
way to exploit the issue addressed by this patch.
2. ptrace(PTRACE_GETREGSET): you can PTRACE_ATTACH to a user_mode_helper thread
before it execs, but ptrace requires SIGSTOP to be delivered which can only
happen at user/kernel boundaries.
3. /proc/*/task/*/syscall: this is perfectly happy to read pt_regs for
user_mode_helpers before the exec completes, but gp is not one of the
registers it returns.
4. PERF_SAMPLE_REGS_USER: LOCKDOWN_PERF normally prevents access to kernel
addresses via PERF_SAMPLE_REGS_INTR, but due to this bug kernel addresses
are also exposed via PERF_SAMPLE_REGS_USER which is permitted under
LOCKDOWN_PERF. I have not attempted to write exploit code.
5. Much of the tracing infrastructure allows access to user registers. I have
not attempted to determine which forms of
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.85-1 (bookworm) | linux 6.1.85-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 7db91e57a0acde126a162ababfb1e0ab190130cb < 9abc3e6f1116adb7a2d4fbb8ce20c37916976bf5 | 9abc3e6f1116adb7a2d4fbb8ce20c37916976bf5 |
| linux | linux | >= 7db91e57a0acde126a162ababfb1e0ab190130cb < dff6072124f6df77bfd36951fbd88565746980ef | dff6072124f6df77bfd36951fbd88565746980ef |
| linux | linux | >= 7db91e57a0acde126a162ababfb1e0ab190130cb < f6583444d7e78dae750798552b65a2519ff3ca84 | f6583444d7e78dae750798552b65a2519ff3ca84 |
| linux | linux | >= 7db91e57a0acde126a162ababfb1e0ab190130cb < 00effef72c98294edb1efa87ffa0f6cfb61b36a4 | 00effef72c98294edb1efa87ffa0f6cfb61b36a4 |
| linux | linux | >= 7db91e57a0acde126a162ababfb1e0ab190130cb < d8dcba0691b8e42bddb61aab201e4d918a08e5d9 | d8dcba0691b8e42bddb61aab201e4d918a08e5d9 |
| linux | linux | >= 7db91e57a0acde126a162ababfb1e0ab190130cb < d14fa1fcf69db9d070e75f1c4425211fa619dfc8 | d14fa1fcf69db9d070e75f1c4425211fa619dfc8 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.216-1 | 5.10.216-1 |
| linux | linux_kernel | >= 0 < 6.1.85-1 | 6.1.85-1 |
| linux | linux_kernel | >= 0 < 6.8.9-1 | 6.8.9-1 |
| linux | linux_kernel | >= 0 < 6.8.9-1 | 6.8.9-1 |
| linux | linux_kernel | >= 0 < 5.15.0-116.126 | 5.15.0-116.126 |
| linux | linux_kernel | >= 0 < 6.8.0-38.38 | 6.8.0-38.38 |
| linux | linux_kernel | >= 4.15 < 5.10.216 | 5.10.216 |
| linux | linux_kernel | >= 5.11 < 5.15.154 | 5.15.154 |
| linux | linux_kernel | >= 5.16 < 6.1.85 | 6.1.85 |
| linux | linux_kernel | >= 6.2 < 6.6.26 | 6.6.26 |
| linux | linux_kernel | >= 6.7 < 6.8.5 | 6.8.5 |
CVSS provenance
nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.1HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
vendor_ubuntu6.3MEDIUM
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Gui-Dong Han discovered that the software RAID driver in the Linux kernel
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Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
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- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- Accessibility subsystem;
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properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
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in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacker could use this to cause a denial of service.
(CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)
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:
- ARM64 architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- Accessibility subsystem;
- Android drivers;
- Drivers core;
- Bluetooth drivers;
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GHSA
GHSA-wjqf-4c62-v6g5: In the Linux kernel, the following vulnerability has been resolved:
riscv: process: Fix kernel gp leakage
childregs represents the registers which a
ghsa_unreviewed·2024-05-19
CVE-2024-35871 [HIGH] GHSA-wjqf-4c62-v6g5: In the Linux kernel, the following vulnerability has been resolved:
riscv: process: Fix kernel gp leakage
childregs represents the registers which a
In the Linux kernel, the following vulnerability has been resolved:
riscv: process: Fix kernel gp leakage
childregs represents the registers which are active for the new thread
in user context. For a kernel thread, childregs->gp is never used since
the kernel gp is not touched by switch_to. For a user mode helper, the
gp value can be observed in user space after execve or possibly by other
means.
[From the email thread]
The /* Kernel thread */ comment is somewhat inaccurate in that it is also used
for user_mode_helper threads, which exec a user process, e.g. /sbin/init or
when /proc/sys/kernel/core_pattern is a pipe. Such threads do not have
PF_KTHREAD set and are valid targets for ptrace etc. even before they exec.
childregs is the *user* context during syscall execution and it is ob
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CVE-2024-35871: In the Linux kernel, the following vulnerability has been resolved: riscv: process: Fix kernel gp leakage childregs represents the registers which are
osv·2024-05-19·CVSS 7.1
CVE-2024-35871 [HIGH] CVE-2024-35871: In the Linux kernel, the following vulnerability has been resolved: riscv: process: Fix kernel gp leakage childregs represents the registers which are
In the Linux kernel, the following vulnerability has been resolved: riscv: process: Fix kernel gp leakage childregs represents the registers which are active for the new thread in user context. For a kernel thread, childregs->gp is never used since the kernel gp is not touched by switch_to. For a user mode helper, the gp value can be observed in user space after execve or possibly by other means. [From the email thread] The /* Kernel thread */ comment is somewhat inaccurate in that it is also used for user_mode_helper threads, which exec a user process, e.g. /sbin/init or when /proc/sys/kernel/core_pattern is a pipe. Such threads do not have PF_KTHREAD set and are valid targets for ptrace etc. even before they exec. childregs is the *user* context during syscall execution and it is observa
Ubuntu
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vendor_ubuntu·2024-09-18·CVSS 6.3
CVE-2024-35825 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
Chenyuan Yang discovered that the CEC driver driver in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (s
Ubuntu
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vendor_ubuntu·2024-07-30·CVSS 6.3
CVE-2024-35785 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacke
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-26·CVSS 6.3
CVE-2024-35785 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
It was discovered that the ATA over Ethernet (AoE) driver in the Linux
kernel contained a race condition, leading to a use-after-free
vulnerability. An attacker could use this to cause a denial of service or
possibly execute arbitrary code. (CVE-2023-6270)
It was discovered that the Atheros 802.11ac wireless driver did not
properly validate certain data structures, leading to a NULL pointer
dereference. An attacker could possibly
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-26
CVE-2024-35929 Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacker could use this to cause a denial of service.
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:
- ARM64 architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- Accessibility subsystem;
- Android drivers;
- Drivers core;
- Bluetooth drivers;
- Clock framework and drivers;
- Data acquisition framework and
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-26·CVSS 6.3
CVE-2024-35785 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacke
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-23·CVSS 6.3
CVE-2024-26814 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacke
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-23·CVSS 4.6
CVE-2024-35967 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacker could use this to cause a denial of service.
(CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)
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:
- ARM64 architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- Accessibility subsystem;
- Android drivers;
- Drivers core;
- Bluetooth drivers;
- Clock framewo
Ubuntu
Linux kernel kernel vulnerabilities
vendor_ubuntu·2024-07-19·CVSS 6.3
CVE-2024-26957 [MEDIUM] Linux kernel kernel vulnerabilities
Title: Linux kernel kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-17·CVSS 6.3
CVE-2024-35907 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacke
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-16·CVSS 4.6
CVE-2024-35946 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacker could use this to cause a denial of service.
(CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)
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:
- ARM64 architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- Accessibility subsystem;
- Android drivers;
- Drivers core;
- Bluetooth drivers;
- Clock framewo
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-15·CVSS 6.3
CVE-2024-24861 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the DRM driver for VMware Virtual GPU did not
properly handle certain error conditions, leading to a NULL pointer
dereference. A local attacker could possibly trigger this vulnerability to
cause a denial of service. (CVE-2022-38096)
Gui-Dong Han discovered that the software RAID driver in the Linux kernel
contained a race condition, leading to an integer overflow vulnerability. A
privileged attacker could possibly use this to cause a denial of service
(system crash). (CVE-2024-23307)
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacke
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-07-11·CVSS 4.6
CVE-2024-35977 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that a race condition existed in the Bluetooth subsystem
in the Linux kernel when modifying certain settings values through debugfs.
A privileged local attacker could use this to cause a denial of service.
(CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)
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:
- ARM64 architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- Compute Acceleration Framework;
- Accessibility subsystem;
- Android drivers;
- Drivers core;
- Bluetooth drivers;
- Clock framewo
Red Hat
kernel: riscv: process: Fix kernel gp leakage
vendor_redhat·2024-05-19·CVSS 7.1
CVE-2024-35871 [HIGH] kernel: riscv: process: Fix kernel gp leakage
kernel: riscv: process: Fix kernel gp leakage
In the Linux kernel, the following vulnerability has been resolved:
riscv: process: Fix kernel gp leakage
childregs represents the registers which are active for the new thread
in user context. For a kernel thread, childregs->gp is never used since
the kernel gp is not touched by switch_to. For a user mode helper, the
gp value can be observed in user space after execve or possibly by other
means.
[From the email thread]
The /* Kernel thread */ comment is somewhat inaccurate in that it is also used
for user_mode_helper threads, which exec a user process, e.g. /sbin/init or
when /proc/sys/kernel/core_pattern is a pipe. Such threads do not have
PF_KTHREAD set and are valid targets for ptrace etc. even before they exec.
childregs is the *user* con
Debian
CVE-2024-35871: linux - In the Linux kernel, the following vulnerability has been resolved: riscv: proc...
vendor_debian·2024·CVSS 7.1
CVE-2024-35871 [HIGH] CVE-2024-35871: linux - In the Linux kernel, the following vulnerability has been resolved: riscv: proc...
In the Linux kernel, the following vulnerability has been resolved: riscv: process: Fix kernel gp leakage childregs represents the registers which are active for the new thread in user context. For a kernel thread, childregs->gp is never used since the kernel gp is not touched by switch_to. For a user mode helper, the gp value can be observed in user space after execve or possibly by other means. [From the email thread] The /* Kernel thread */ comment is somewhat inaccurate in that it is also used for user_mode_helper threads, which exec a user process, e.g. /sbin/init or when /proc/sys/kernel/core_pattern is a pipe. Such threads do not have PF_KTHREAD set and are valid targets for ptrace etc. even before they exec. childregs is the *user* context during syscall execution and it is observa
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/00effef72c98294edb1efa87ffa0f6cfb61b36a4https://git.kernel.org/stable/c/9abc3e6f1116adb7a2d4fbb8ce20c37916976bf5https://git.kernel.org/stable/c/d14fa1fcf69db9d070e75f1c4425211fa619dfc8https://git.kernel.org/stable/c/d8dcba0691b8e42bddb61aab201e4d918a08e5d9https://git.kernel.org/stable/c/dff6072124f6df77bfd36951fbd88565746980efhttps://git.kernel.org/stable/c/f6583444d7e78dae750798552b65a2519ff3ca84https://git.kernel.org/stable/c/00effef72c98294edb1efa87ffa0f6cfb61b36a4https://git.kernel.org/stable/c/9abc3e6f1116adb7a2d4fbb8ce20c37916976bf5https://git.kernel.org/stable/c/d14fa1fcf69db9d070e75f1c4425211fa619dfc8https://git.kernel.org/stable/c/d8dcba0691b8e42bddb61aab201e4d918a08e5d9https://git.kernel.org/stable/c/dff6072124f6df77bfd36951fbd88565746980efhttps://git.kernel.org/stable/c/f6583444d7e78dae750798552b65a2519ff3ca84https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
2024-05-19
Published