CVE-2026-80924
UnknownSummary
In the Linux kernel, in the crypto: krb5 module, crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum() free the buffer holding freshly derived keys with plain kfree(), leaving the key material behind in the freed slab object. This can lead to sensitive data leakage.
Risk Assessment
The risk involves potential leakage of cryptographic key material into memory, which could be recovered by a local attacker or through memory analysis. This may compromise the confidentiality of encrypted communications.
Recommendation
It is recommended to apply the kernel patch that uses kfree_sensitive() to zero out memory before freeing, removing sensitive data.
Other vulnerabilities in Linux kernel
See all- CVE-2026-80925Unknown
A vulnerability in the Linux kernel's VLAN mechanism involves dynamically changing hard_header_len when toggling hardware VLAN TX offload. This causes a data race in lockless TX paths, potentially leading to skb_under_panic and a mismatch between allocated headroom and header creation.
- CVE-2026-80923Unknown
In the Linux kernel, in the xhci: dbgtty driver, if tty_register_driver() fails, it drops the reference but fails to set the global dbc_tty_driver to NULL, causing the unregister to be called again when the module exits. This leads to a use-after-free condition.
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In the Linux kernel, in KVM: s390 vsie, when shadowing crypto access bits from a format0 apcb (crycb 0 or 1), bits 64..255 are unchanged from whatever is in the vsie page in the crycb and thus in the apcb. This gives a nested guest potential access to a device no longer available. Zero out the remaining bits.
- CVE-2026-80920Unknown
In the Linux kernel, in io_uring, eventfd signaling is done inline when adding the first entry to the work list, which can cause issues when the addition is done from a wakeup handler context. The fix adds the IOU_F_TWQ_IN_WAKE flag to force deferral of signaling via call_rcu_hurry() instead of inline signaling.
- CVE-2026-80919Unknown
In the Linux kernel, a vulnerability was found in the amdgpu driver where amdgpu_devcoredump_format() recursively acquires a ww_mutex lock. This can lead to a deadlock when dumping IB contents from a hung job. The fix moves the operation to a separate helper using a single drm_exec context.
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- CVE-2026-80917Unknown
A vulnerability in the Linux kernel causes a NULL pointer dereference in the PCI host-generic driver on 32-bit systems using CAM mode. During PCI bus enumeration, the first config read uses an uninitialized mapping, leading to a kernel panic. The issue stems from missing add_bus/remove_bus callbacks in the CAM operations, which are necessary for proper mapping of the config space.
- CVE-2026-80916Unknown
A vulnerability in the Linux kernel's KCOV mechanism causes data corruption and race conditions on PREEMPT_RT systems. The issue stems from storing temporary KCOV state in per-CPU areas, which can be overwritten by nested softirq preemption. Additionally, under certain initialization conditions, it may lead to kernel panic or memory leaks.
- CVE-2026-80915Unknown
In the Linux kernel, the drm/xe driver's DPT allocation paths were fixed. The fallback from VRAM to system memory was removed as it did not work and caused black screen with pipe faults. Also, stolen memory usage is avoided due to latency and risk of random system hangs under load.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: crypto: krb5 - use kfree_sensitive() for derived key buffers crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum() free the buffer holding the freshly derived keys with plain kfree(), leaving the key material behind in the freed slab object.