Debian: >> Debian Linux Security Vulnerabilities
In the Linux kernel, the following vulnerability has been resolved:
pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()
With CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a
divide-by-zero in the following line:
do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm]));
due to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate()
returns zero.
This is presumably just a theoretical problem: COMPILE_TEST overrides
the dependency on RALINK which would select COMMON_CLK. Regardless it's
a good idea to check for the error explicitly to avoid divide-by-zero.
Fixes the following warning:
drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section
[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]
CVSS Score
5.5
EPSS Score
0.001
Published
2025-05-09
In the Linux kernel, the following vulnerability has been resolved:
PCI: Fix reference leak in pci_register_host_bridge()
If device_register() fails, call put_device() to give up the reference to
avoid a memory leak, per the comment at device_register().
Found by code review.
[bhelgaas: squash Dan Carpenter's double free fix from
https://lore.kernel.org/r/db806a6c-a91b-4e5a-a84b-6b7e01bdac85@stanley.mountain]
CVSS Score
5.5
EPSS Score
0.0
Published
2025-05-09
In the Linux kernel, the following vulnerability has been resolved:
jbd2: remove wrong sb->s_sequence check
Journal emptiness is not determined by sb->s_sequence == 0 but rather by
sb->s_start == 0 (which is set a few lines above). Furthermore 0 is a
valid transaction ID so the check can spuriously trigger. Remove the
invalid WARN_ON.
CVSS Score
7.8
EPSS Score
0.0
Published
2025-05-09
In the Linux kernel, the following vulnerability has been resolved:
mtd: rawnand: brcmnand: fix PM resume warning
Fixed warning on PM resume as shown below caused due to uninitialized
struct nand_operation that checks chip select field :
WARN_ON(op->cs >= nanddev_ntargets(&chip->base)
[ 14.588522] ------------[ cut here ]------------
[ 14.588529] WARNING: CPU: 0 PID: 1392 at drivers/mtd/nand/raw/internals.h:139 nand_reset_op+0x1e0/0x1f8
[ 14.588553] Modules linked in: bdc udc_core
[ 14.588579] CPU: 0 UID: 0 PID: 1392 Comm: rtcwake Tainted: G W 6.14.0-rc4-g5394eea10651 #16
[ 14.588590] Tainted: [W]=WARN
[ 14.588593] Hardware name: Broadcom STB (Flattened Device Tree)
[ 14.588598] Call trace:
[ 14.588604] dump_backtrace from show_stack+0x18/0x1c
[ 14.588622] r7:00000009 r6:0000008b r5:60000153 r4:c0fa558c
[ 14.588625] show_stack from dump_stack_lvl+0x70/0x7c
[ 14.588639] dump_stack_lvl from dump_stack+0x18/0x1c
[ 14.588653] r5:c08d40b0 r4:c1003cb0
[ 14.588656] dump_stack from __warn+0x84/0xe4
[ 14.588668] __warn from warn_slowpath_fmt+0x18c/0x194
[ 14.588678] r7:c08d40b0 r6:c1003cb0 r5:00000000 r4:00000000
[ 14.588681] warn_slowpath_fmt from nand_reset_op+0x1e0/0x1f8
[ 14.588695] r8:70c40dff r7:89705f41 r6:36b4a597 r5:c26c9444 r4:c26b0048
[ 14.588697] nand_reset_op from brcmnand_resume+0x13c/0x150
[ 14.588714] r9:00000000 r8:00000000 r7:c24f8010 r6:c228a3f8 r5:c26c94bc r4:c26b0040
[ 14.588717] brcmnand_resume from platform_pm_resume+0x34/0x54
[ 14.588735] r5:00000010 r4:c0840a50
[ 14.588738] platform_pm_resume from dpm_run_callback+0x5c/0x14c
[ 14.588757] dpm_run_callback from device_resume+0xc0/0x324
[ 14.588776] r9:c24f8054 r8:c24f80a0 r7:00000000 r6:00000000 r5:00000010 r4:c24f8010
[ 14.588779] device_resume from dpm_resume+0x130/0x160
[ 14.588799] r9:c22539e4 r8:00000010 r7:c22bebb0 r6:c24f8010 r5:c22539dc r4:c22539b0
[ 14.588802] dpm_resume from dpm_resume_end+0x14/0x20
[ 14.588822] r10:c2204e40 r9:00000000 r8:c228a3fc r7:00000000 r6:00000003 r5:c228a414
[ 14.588826] r4:00000010
[ 14.588828] dpm_resume_end from suspend_devices_and_enter+0x274/0x6f8
[ 14.588848] r5:c228a414 r4:00000000
[ 14.588851] suspend_devices_and_enter from pm_suspend+0x228/0x2bc
[ 14.588868] r10:c3502910 r9:c3501f40 r8:00000004 r7:c228a438 r6:c0f95e18 r5:00000000
[ 14.588871] r4:00000003
[ 14.588874] pm_suspend from state_store+0x74/0xd0
[ 14.588889] r7:c228a438 r6:c0f934c8 r5:00000003 r4:00000003
[ 14.588892] state_store from kobj_attr_store+0x1c/0x28
[ 14.588913] r9:00000000 r8:00000000 r7:f09f9f08 r6:00000004 r5:c3502900 r4:c0283250
[ 14.588916] kobj_attr_store from sysfs_kf_write+0x40/0x4c
[ 14.588936] r5:c3502900 r4:c0d92a48
[ 14.588939] sysfs_kf_write from kernfs_fop_write_iter+0x104/0x1f0
[ 14.588956] r5:c3502900 r4:c3501f40
[ 14.588960] kernfs_fop_write_iter from vfs_write+0x250/0x420
[ 14.588980] r10:c0e14b48 r9:00000000 r8:c25f5780 r7:00443398 r6:f09f9f68 r5:c34f7f00
[ 14.588983] r4:c042a88c
[ 14.588987] vfs_write from ksys_write+0x74/0xe4
[ 14.589005] r10:00000004 r9:c25f5780 r8:c02002fA0 r7:00000000 r6:00000000 r5:c34f7f00
[ 14.589008] r4:c34f7f00
[ 14.589011] ksys_write from sys_write+0x10/0x14
[ 14.589029] r7:00000004 r6:004421c0 r5:00443398 r4:00000004
[ 14.589032] sys_write from ret_fast_syscall+0x0/0x5c
[ 14.589044] Exception stack(0xf09f9fa8 to 0xf09f9ff0)
[ 14.589050] 9fa0: 00000004 00443398 00000004 00443398 00000004 00000001
[ 14.589056] 9fc0: 00000004 00443398 004421c0 00000004 b6ecbd58 00000008 bebfbc38 0043eb78
[ 14.589062] 9fe0: 00440eb0 bebfbaf8 b6de18a0 b6e579e8
[ 14.589065] ---[ end trace 0000000000000000 ]---
The fix uses the higher level nand_reset(chip, chipnr); where chipnr = 0, when
doing PM resume operation in compliance with the controller support for single
die nand chip. Switching from nand_reset_op() to nan
---truncated---
CVSS Score
7.8
EPSS Score
0.0
Published
2025-05-09
In the Linux kernel, the following vulnerability has been resolved:
pm: cpupower: bench: Prevent NULL dereference on malloc failure
If malloc returns NULL due to low memory, 'config' pointer can be NULL.
Add a check to prevent NULL dereference.
CVSS Score
5.5
EPSS Score
0.001
Published
2025-05-09
In the Linux kernel, the following vulnerability has been resolved:
cpufreq: scpi: Fix null-ptr-deref in scpi_cpufreq_get_rate()
cpufreq_cpu_get_raw() can return NULL when the target CPU is not present
in the policy->cpus mask. scpi_cpufreq_get_rate() does not check for
this case, which results in a NULL pointer dereference.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-05-08
In the Linux kernel, the following vulnerability has been resolved:
cpufreq: scmi: Fix null-ptr-deref in scmi_cpufreq_get_rate()
cpufreq_cpu_get_raw() can return NULL when the target CPU is not present
in the policy->cpus mask. scmi_cpufreq_get_rate() does not check for
this case, which results in a NULL pointer dereference.
Add NULL check after cpufreq_cpu_get_raw() to prevent this issue.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-05-08
In the Linux kernel, the following vulnerability has been resolved:
LoongArch: Return NULL from huge_pte_offset() for invalid PMD
LoongArch's huge_pte_offset() currently returns a pointer to a PMD slot
even if the underlying entry points to invalid_pte_table (indicating no
mapping). Callers like smaps_hugetlb_range() fetch this invalid entry
value (the address of invalid_pte_table) via this pointer.
The generic is_swap_pte() check then incorrectly identifies this address
as a swap entry on LoongArch, because it satisfies the "!pte_present()
&& !pte_none()" conditions. This misinterpretation, combined with a
coincidental match by is_migration_entry() on the address bits, leads to
kernel crashes in pfn_swap_entry_to_page().
Fix this at the architecture level by modifying huge_pte_offset() to
check the PMD entry's content using pmd_none() before returning. If the
entry is invalid (i.e., it points to invalid_pte_table), return NULL
instead of the pointer to the slot.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-05-08
In the Linux kernel, the following vulnerability has been resolved:
irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
With ACPI in place, gicv2m_get_fwnode() is registered with the pci
subsystem as pci_msi_get_fwnode_cb(), which may get invoked at runtime
during a PCI host bridge probe. But, the call back is wrongly marked as
__init, causing it to be freed, while being registered with the PCI
subsystem and could trigger:
Unable to handle kernel paging request at virtual address ffff8000816c0400
gicv2m_get_fwnode+0x0/0x58 (P)
pci_set_bus_msi_domain+0x74/0x88
pci_register_host_bridge+0x194/0x548
This is easily reproducible on a Juno board with ACPI boot.
Retain the function for later use.
CVSS Score
7.8
EPSS Score
0.0
Published
2025-05-08
In the Linux kernel, the following vulnerability has been resolved:
xen-netfront: handle NULL returned by xdp_convert_buff_to_frame()
The function xdp_convert_buff_to_frame() may return NULL if it fails
to correctly convert the XDP buffer into an XDP frame due to memory
constraints, internal errors, or invalid data. Failing to check for NULL
may lead to a NULL pointer dereference if the result is used later in
processing, potentially causing crashes, data corruption, or undefined
behavior.
On XDP redirect failure, the associated page must be released explicitly
if it was previously retained via get_page(). Failing to do so may result
in a memory leak, as the pages reference count is not decremented.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-05-08