Eric Biggers

12 exploits Active since Mar 2017
CVE-2017-7374 WRITEUP HIGH WRITEUP
Linux kernel < 4.10.7 - Use After Free
Use-after-free vulnerability in fs/crypto/ in the Linux kernel before 4.10.7 allows local users to cause a denial of service (NULL pointer dereference) or possibly gain privileges by revoking keyring keys being used for ext4, f2fs, or ubifs encryption, causing cryptographic transform objects to be freed prematurely.
CVSS 7.8
CVE-2017-7472 WRITEUP MEDIUM WRITEUP
Linux kernel < 4.10.13 - Denial of Service via KEY_REQKEY_DEFL_THREAD_KEYRING Keyctl Calls
The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.
CVSS 5.5
CVE-2017-12192 WRITEUP MEDIUM WRITEUP
Linux Kernel < 4.13.4 - Denial of Service via KEYCTL_READ Operation
The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.
CVSS 5.5
CVE-2017-15274 WRITEUP MEDIUM WRITEUP
Linux Kernel < 4.11.4 - Denial of Service via NULL Payload in keyctl System Call
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
CVSS 5.5
CVE-2017-15537 WRITEUP MEDIUM WRITEUP
Linux Kernel < 4.13.5 - Unauthorized FPU Register Exposure via xstate Header
The x86/fpu (Floating Point Unit) subsystem in the Linux kernel before 4.13.5, when a processor supports the xsave feature but not the xsaves feature, does not correctly handle attempts to set reserved bits in the xstate header via the ptrace() or rt_sigreturn() system call, allowing local users to read the FPU registers of other processes on the system, related to arch/x86/kernel/fpu/regset.c and arch/x86/kernel/fpu/signal.c.
CVSS 5.5
CVE-2017-17052 WRITEUP HIGH WRITEUP
Linux kernel <4.12.10 - Use After Free
The mm_init function in kernel/fork.c in the Linux kernel before 4.12.10 does not clear the ->exe_file member of a new process's mm_struct, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program.
CVSS 7.8
CVE-2017-17053 WRITEUP HIGH WRITEUP
Linux kernel <4.12.10 - Use After Free
The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y.
CVSS 7.0
CVE-2017-17805 WRITEUP HIGH WRITEUP
Linux Kernel < 4.14.8 - Denial of Service via Salsa20 Zero-Length Input Handling
The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable.
CVSS 7.8
CVE-2017-17806 WRITEUP HIGH WRITEUP
Linux Kernel < 4.14.8 - Stack Buffer Overflow via Unkeyed HMAC with SHA-3
The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8 does not validate that the underlying cryptographic hash algorithm is unkeyed, allowing a local attacker able to use the AF_ALG-based hash interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a crafted sequence of system calls that encounter a missing SHA-3 initialization.
CVSS 7.8
CVE-2017-17807 WRITEUP LOW WRITEUP
Linux Kernel < 4.14.6 - Missing Authorization in KEYS Subsystem
The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.
CVSS 3.3
CVE-2017-18075 WRITEUP HIGH WRITEUP
Linux Kernel < 4.14.13 - Use-After-Free in crypto/pcrypt.c
crypto/pcrypt.c in the Linux kernel before 4.14.13 mishandles freeing instances, allowing a local user able to access the AF_ALG-based AEAD interface (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt (CONFIG_CRYPTO_PCRYPT) to cause a denial of service (kfree of an incorrect pointer) or possibly have unspecified other impact by executing a crafted sequence of system calls.
CVSS 7.8
CVE-2018-19854 WRITEUP MEDIUM WRITEUP
Linux kernel <4.19.3 - Info Disclosure
An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).
CVSS 4.7